Question

in quadrilateral abcd angle b = 150° if angle a= anglle c= angle d then angle d = ?​

Answer 1

Answer:

let the angle b,c,d be x,x,x                         [as the three angles are equal]

now angle sum property of quadrilateral= 360 degree

given;angle A=150 degree

therefore,

angle A+angleB+angle C+angle D=360 degree

150+3x=360 degree

3x=210

x=70

hence,angles are 150,70,70 and 70 degree

Answer 2

Answer:

Given in a quadrilateral

A =C = D = x

B = 150

Sum of all the angles in a quadrilateral is 360

A + B +C +D =360

x + 150 +x +x =360

3x =360-150

3x = 210

x = 70

A = C = D = 70

angle D =70 degrees

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