Question

in parallelogram ABCD if angleA=50° then angleB=?​

Answer 1

Answer:

90 degree

Step-by-step explanation:

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Answer 2

130°

Step-by-step explanation:

In parallelogram ABCD,

angle A = angle C

angle B = angle D

The sum of all these angles is 360°

angle A + angle B + angle C + angle D = 360°

Given,

angle A = 50°

angle C = 50°

angle B = ?

50 + angle B + 50 + angle D = 360°

=> 50 + angle B + 50 + angle B = 360°

(angle B = angle D)

=> 100 + 2 × angle B = 360

=> 2 × angle B = 260

=> angle B = 130

angle B = 130°