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Angle Facts Revision Sheet
19/10/2022
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a+6+c=1800 a = b a a = 60° a+b+c+d=360° a+b+c=1800 Angles in a triangle add up to 1800 Base angles in an isoceles triangle are equal désé All angles in an equilateral triangle are equal Call 60% Angles in a quadrilateral add up to 360° Angles on a straight line add up to 180⁰ a+b+c+d=360° 6 Angles around a Point add Angle up to 360° Vertically opposite angles are equal Facts Alternate angler are equal (z' Rule) Corresponding angles are equal (F'rule) a+b=180° a+b+c+d=350° a + 6 =180° Supplementary angles add up to 180° (t'rule) Exterior angles add up to 360° Sum of interior angles of a polygon: (n-2) x 180 Exterior angle of a reguar polygon: 360 Interior angle of(-2)x180 regular polygon n a Interior angle + exterior ang le = 180°
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