Question

find the value of x in following quadrilaterals

Answer 1

As We Know Sum Of The Angles Of A Quadrilateral = 360°

Let Angle D Be " X"

=> Angle A + Angle B + Angle C + Angle D = 360°

=> 120°+100°+90°+x = 360°

=> 310+x= 360°

=> x= 360-310

=> x= 50°

Therefore Angle D = 50°

Answer 2

Given,

<A = 120°

<B = 100°

<c = 90°

<D = x

As, we know that sum of all angle of quadrilateral is 360°

A/q,

=> < A + < B + < C + < D = 360°

=> 120° + 100° + 90° +x = 360°

=> 310° + x = 360°

=> x = 360° - 310°

=> x = 50°

so , < D = 50°

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