Question

two angles of a quadrilateral are 89 degree and 113 degree if the other two angles are equal find the equal angles

Answer 1

The sum of angle of a quadrilateral is 360°
Then let the equal angle be x
89+113+x+x=360°
2x + 202=360°
2x =360°-202
2x= 1 5 8
X=158/2
x=79
So the answer is 79
Proof
79+79+89+113=360°
I think it will help u

Answer 2

$let \: the \: other \: two \: equal \: angles \: be \: x \\ sum \: of \: angles \: of \: quadrilateral \: = \: 360 \: degrees \\ x + x + 89 + 113 = 360 \\ 2x + 202 = 360 \\ 2x = 360 - 202 \\ 2x = 158 \\ x = 158\div 2 \\ x = 79\\ therefore \: each \: equal \: angle \: measures \: 79degrees$