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Infection and response
Organisation
Cell biology
Biological molecules
Homeostasis and response
Responding to change (a2 only)
Energy transfers (a2 only)
The control of gene expression (a-level only)
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
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1f industrialisation and the people: britain, c1783-1885
1c the tudors: england, 1485-1603
Britain & the wider world: 1745 -1901
Inter-war germany
World war one
2n revolution and dictatorship: russia, 1917-1953
World war two & the holocaust
1l the quest for political stability: germany, 1871-1991
The cold war
2j america: a nation divided, c1845-1877
Medieval period: 1066 -1509
The fight for female suffrage
2m wars and welfare: britain in transition, 1906-1957
2d religious conflict and the church in england, c1529-c1570
Britain: 1509 -1745
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31/03/2023
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POLYGONS interior angles) Regular polygons Regular means that all the angles and sides are the same 180 Triangle 900 Answer = 162 360 Square 3960/180 = 22 22 +2 1260 Answer 24 Heptagon Examples Questions: a) Find the sum of interior angles of a polygon with 7 sides (7-2) x 180 5 x 180 Octagon c) The sum of the interior angles of a polygon is 3960. How many sides does the polygon have? 540 Pentagon Answer=900 b) A regular polygon has 20 sides. Find the size of each interior angle. (20-2) x 180 18 x 180 = 3240 3240/20 1080 Nonagon 720 Hexagon 1440 Decagon Formular to find the interior angles for regular polygons is: (n-2) x 180 6 number of sides POLYGONS (exterior angles) Formular for exterior angles is: 180-interior angles (The sum of exterior angles is 360) 72 108 72 108 108 72 540 1108 72 108 72
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