Question

9) If ABCD is a cyclic quadrilateral with ZA = 50°
ZB= 80°, then ZC and ZD are​

Answer 1

Answer:

ZC=100° and ZD=130°

Step-by-step explanation:

ZA+ZD=180°.......from cyclic quadrilateral

and

ZB+ZC=180°......from cyclic quadrilateral

given : ZA= 50°and ZB=80°

therefore:ZA+ZD =180°

50°+ZD=180°

ZD=180°-50°

ZD=130°

and. ZB+ZC =180°

80°+ZC =180°

ZC =180°-80°

ZC=100°

therefore: value of ZC =100° and. ZD=130°