Question

two angels of a quadrilateral are equal and the sum of the other two angels it's 210degree. find the measure

Answer 1

LET US ASSUME THE TWO ANGLES AS x
let all the angles of a quadrilateral be angleA,B,C,D
A+B+C +D=360
LET ANGLE A=B=x
x+x +C+D=360
2x+210=360
2x=360-210
2x=150
x=75