polygons 0.0 / 5 ? MathematicsgeometaryGCSEAll boards Created by: macGloin.mCreated on: 30-11-19 12:31 how do you figure out the sum of the interior angles? find the number of triangles and times by 180 1 of 6 find the sum of the interior angles of a decogan e.g. decogans have 8 triangles. Therefore the answer is 1440 2 of 6 how do you find an interior angle? find the sum of the interior angles and divide them by the number of sides. 3 of 6 find an interior angle for a hexagon e.g: the sum of the interior angles is 720 and there are 6 sides. Therefore the answer is 120. 4 of 6 how do you find an exterior angle? straight line (180) - each interior angle. 5 of 6 find an exterior angle for a pentagon e.g: 180- interior angle (108) Therefore the answer is 72 6 of 6
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