Any quadrilateral may be split into two triangles; the sum of internal angles of any triangle is 180 degrees; so the sum of internal angles of a quadrilateral will then be the double of the sum of internal angles of a triangle: 180 x 2 = 360.
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How many sides does a regular polygon have if the measure of each interior angle is equal to 172 degress ?
90
measure of exterior angle of triangle is equal to sum of interior angles. for eg. In triangle ABC, angle C is exterior angle angle A and angle B are interior angles so, C=A+B
Oh honey, you're describing a kite. It's like geometry's version of a fashionable accessory - two pairs of equal sides, a pair of equal angles, and that one sassy reflex angle to keep things interesting. It's the quadrilateral that's all about balance and style.
Each interior angle of a decagon is 144 degrees.An exterior angle is 180 - measure of interior angle.There exterior angle of decagon is 180-144which is equal to-36