Question

Three angles of a quadrilateral are equal and the measures of the fourth angle is 120 degree find the measures of each of the equal angles

Answer 1

Let,
Each equal angle be x,

____________

According to the given informations, sum of angles of a quadrilateral is 360°

x +x +x +120 =360°

3x +120=360

3x =360-120

3x = 240°.

x =240/3

x =80


Each equal angle =80°



I hope this will help you


-by ABHAY

Answer 2

A +B+C+D = 360
D = 120
then
3A = 240
A = 80

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