Question

in a quadrilateral abcd, a=100,b=105,c=70 then find d​

Answer 1

Hello Mate!!

Answer:-

By angle sum property of a quadrilateral

A + B + C + D = 360

100 + 105 + 75 + D = 360

280 + D = 360

D = 360 - 280

D = 80

Hope it helps!!

Answer 2

In quadrilateral ABCD, by sum angle property, we have

∠A+ ∠B+∠C+∠D = 360°

100°+105°+70°+∠D = 360°

275°+∠D= 360°

∠D = 360°-275°

∠D = 85°