Uhly sa používajú všade okolo nás - od stavby domov... Show more
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Updated Mar 19, 2026
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Typy uhlov a ich vzťahy
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Základy uhlov
Uhol je časť roviny ohraničená dvoma polpriamkami s rovnakým začiatkom. Každý uhol má vrchol (spoločný bod) a ramená (tie dve polpriamky).
Meráme uhly v stupňoch pomocou uhlomera. Celý kruh má 360°, čo je super užitočné vedieť!
Tip: Vždy si nakresli obrázek - pomôže ti lepšie pochopiť, o ktoré uhly ide.
Druhy uhlov podľa veľkosti
Podľa veľkosti rozdeľujeme uhly na šesť typov:
Ostrý uhol (0° až 90°) vyzerá ako špic. Pravý uhol má presne 90° a vyzerá ako roh štvorca - značíme ho oblúčikom s bodkou. Tupý uhol (90° až 180°) je "otvorenejší" ako pravý.
Priamy uhol má 180° a je vlastne priamka. Vypuklý uhol (180° až 360°) je ten "väčší" uhol. Plný uhol má 360° - je to celá otočka dokola.
Pamätaj si: Pravý uhol = 90°, priamy uhol = 180°, plný uhol = 360°
Susedné a vrcholové uhly
Susedné uhly majú spoločný vrchol a jedno spoločné rameno. Ak sú na priamke, ich súčet je vždy 180°. To znamená: α + β = 180°.
Vrcholové uhly vzniknú, keď sa pretnú dve priamky. Ležia oproti sebe cez spoločný vrchol a sú vždy rovnaké. Ak je jeden vrcholový uhol 60°, druhý je tiež 60°.
Skvelé: Tieto pravidlá ti pomôžu vypočítať neznáme uhly aj bez uhlomera!
Rovnobežné priamky a priečka
Keď priečka pretína dve rovnobežné priamky, vznikne až 8 uhlov! Tu platia špeciálne pravidlá, ale len ak sú priamky naozaj rovnobežné.
Súhlasné uhly ležia na rovnakej strane priečky v rovnakej polohe a sú rovnaké. Napríklad oba "hore vľavo" pri každom priesečníku.
Striedavé uhly ležia na opačných stranách priečky. Môžu byť vnútorné (medzi rovnobežkami) alebo vonkajšie (mimo rovnobežiek). Ak sú priamky rovnobežné, striedavé uhly sú rovnaké.
Pozor: Pravidlá pre súhlasné a striedavé uhly platia LEN pri rovnobežných priamkach!
Riešenie príkladov
Pri riešení príkladov s uhlami postupuj systematicky. Najprv si nakresli obrázok a označ známe uhly.
Ak máš pretínajúce sa priamky s jedným uhlom 50°, použiješ pravidlá: vrcholový uhol je tiež 50°, susedné uhly sú 180° - 50° = 130°.
Pri rovnobežkách s priečkou si postupne vypočítaj všetky uhly pomocou pravidiel pre súhlasné a striedavé uhly. Vždy si skontroluj výsledok - susedné uhly musia dať spolu 180°.
Tajomstvo úspechu: Hľadaj priamky! Ak vidíš priamku, uhly na nej majú spolu vždy 180°.
Rýchle zhrnutie na test
Pre test si zapamätaj: ostrý uhol (<90°), pravý uhol (=90°), tupý uhol (90°-180°), priamy uhol (=180°).
Susedné uhly na priamke: súčet = 180°. Vrcholové uhly: vždy rovnaké. Súhlasné uhly pri rovnobežkách: rovnaké. Striedavé uhly pri rovnobežkách: rovnaké.
Nezabudni správne značiť pravý uhol oblúčikom s bodkou a rovnobežné priamky šípkami.
Kľúč k úspechu: Vždy skontroluj, či sú priamky rovnobežné, pred použitím pravidiel!
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You can download the app from Google Play Store and Apple App Store.
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4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Typy uhlov a ich vzťahy
Uhly sa používajú všade okolo nás - od stavby domov po trafeinie futbalovej brány pod správnym uhlom. Poďme si spoločne zopakovať všetko dôležité o uhloch, ich druhoch a pravidlách, ktoré musíš vedieť na test.
Základy uhlov
Uhol je časť roviny ohraničená dvoma polpriamkami s rovnakým začiatkom. Každý uhol má vrchol (spoločný bod) a ramená (tie dve polpriamky).
Meráme uhly v stupňoch pomocou uhlomera. Celý kruh má 360°, čo je super užitočné vedieť!
Tip: Vždy si nakresli obrázek - pomôže ti lepšie pochopiť, o ktoré uhly ide.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Druhy uhlov podľa veľkosti
Podľa veľkosti rozdeľujeme uhly na šesť typov:
Ostrý uhol (0° až 90°) vyzerá ako špic. Pravý uhol má presne 90° a vyzerá ako roh štvorca - značíme ho oblúčikom s bodkou. Tupý uhol (90° až 180°) je "otvorenejší" ako pravý.
Priamy uhol má 180° a je vlastne priamka. Vypuklý uhol (180° až 360°) je ten "väčší" uhol. Plný uhol má 360° - je to celá otočka dokola.
Pamätaj si: Pravý uhol = 90°, priamy uhol = 180°, plný uhol = 360°
Sign up to see the contentIt's free!
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Improve your grades
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Susedné a vrcholové uhly
Susedné uhly majú spoločný vrchol a jedno spoločné rameno. Ak sú na priamke, ich súčet je vždy 180°. To znamená: α + β = 180°.
Vrcholové uhly vzniknú, keď sa pretnú dve priamky. Ležia oproti sebe cez spoločný vrchol a sú vždy rovnaké. Ak je jeden vrcholový uhol 60°, druhý je tiež 60°.
Skvelé: Tieto pravidlá ti pomôžu vypočítať neznáme uhly aj bez uhlomera!
Sign up to see the contentIt's free!
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Improve your grades
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Rovnobežné priamky a priečka
Keď priečka pretína dve rovnobežné priamky, vznikne až 8 uhlov! Tu platia špeciálne pravidlá, ale len ak sú priamky naozaj rovnobežné.
Súhlasné uhly ležia na rovnakej strane priečky v rovnakej polohe a sú rovnaké. Napríklad oba "hore vľavo" pri každom priesečníku.
Striedavé uhly ležia na opačných stranách priečky. Môžu byť vnútorné (medzi rovnobežkami) alebo vonkajšie (mimo rovnobežiek). Ak sú priamky rovnobežné, striedavé uhly sú rovnaké.
Pozor: Pravidlá pre súhlasné a striedavé uhly platia LEN pri rovnobežných priamkach!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Riešenie príkladov
Pri riešení príkladov s uhlami postupuj systematicky. Najprv si nakresli obrázok a označ známe uhly.
Ak máš pretínajúce sa priamky s jedným uhlom 50°, použiješ pravidlá: vrcholový uhol je tiež 50°, susedné uhly sú 180° - 50° = 130°.
Pri rovnobežkách s priečkou si postupne vypočítaj všetky uhly pomocou pravidiel pre súhlasné a striedavé uhly. Vždy si skontroluj výsledok - susedné uhly musia dať spolu 180°.
Tajomstvo úspechu: Hľadaj priamky! Ak vidíš priamku, uhly na nej majú spolu vždy 180°.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Rýchle zhrnutie na test
Pre test si zapamätaj: ostrý uhol (<90°), pravý uhol (=90°), tupý uhol (90°-180°), priamy uhol (=180°).
Susedné uhly na priamke: súčet = 180°. Vrcholové uhly: vždy rovnaké. Súhlasné uhly pri rovnobežkách: rovnaké. Striedavé uhly pri rovnobežkách: rovnaké.
Nezabudni správne značiť pravý uhol oblúčikom s bodkou a rovnobežné priamky šípkami.
Kľúč k úspechu: Vždy skontroluj, či sú priamky rovnobežné, pred použitím pravidiel!
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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Most popular content in Matematika
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Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user