Question

in a quadrilateral ABCD angle A= 70• angle B =85• angle C=115• find angle D​

Answer 1

Step-by-step explanation:

in a quadrilateral ABCD angle A= 70• angle B =85• angle C=115• find angle D. Make by yourself

Answer 2

Answer:

90°

Step-by-step explanation:

<A = 70°

<B = 85°

<C = 115°

Let angle D be x°

Therefore,

<A + <B + <C + x = 360° [ Angle Sum Property of Quadrilateral ]

70°+85°+115°+x= 360°

270°+x = 360°

x = 360°-270°

x = 90°