![]() ![]() Exterior Angles in a Triangle - MathBitsNotebook (Jr - CCSS Math). ![]() The measure of an exterior angle is equal to the . Exterior angles are angles that are parallel to the inner angles of a polygon but lie on the outside of it. The interior angles of a triangle add to 180:a + b + c = 180 Angles c and d make a straight angle, which is 180:d + c = 180 So d + c equals a + b + Reach support from expert professors Exterior Angles (Definition, Examples) - BYJUS. ![]() Interior: n-sides sum = (n-2)180 (8-2)180 = 1080 1080/8=135 How to calculate exterior angles in a triangle | Math Textbook. Calculate the measure of one interior and one exterior angle of a regular octagon. Interior and Exterior Angles of Polygons - Geometry - Ask Rose. ![]()
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