Question

two angles of a quadrilateral are 89°and 113°.If the other two angles are equal, find the equal angles.​

Answer 1

Step-by-step explanation:

let the equal angles be x  

∴89°+113°+x+x=360

∴89°+113°+2x=360

∴202+2x=360

∴2x=360-202

∴x=158

     the 2 equal angles are 158° & 158°

Answer 2

89°+113°+2x=360

2x+202=360

2x=158

x=79