Question

In a quadrilateral PQRS, ZP= 120° and ZQ= ZR= ZS, find ZQ, ZR<br />and ZS.<br />​

Answer 1

Answer:

sum of angles of quadrilateral is 360

let ZQ=ZR=ZS=X

Now ZP+ZQ+ZR+ZS=360

120+X+X+X=360

120+3X=360

3X=360-120

3X=240

X=240/3

X=80

hence ZQ=ZR=ZS=80