Question

if the measure of two angles of a quadrilateral ABCD are 75 degree and 123 degree and the measure of each of these equal angles will be. 80 degree, 81 degree , 75 degree, 65 degree​

Answer 1

Answer: The answer is 81°

Step-by-step explanation:

Let each equal angle be x

Sum of all angles in a quadrilateral=360°

123°+75°+x+x=360°

198°+2x=360°

2x=360°-198°

2x=162°

x=162°/2=81°

So, each equal angle is 81°