Question:

ABCD is a parallelogram. If the measure of angle B=71 degrees find the measure of angle a?

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ABCD is a parallelogram. If the measure of angle B=71 degrees find the measure of angle a?

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  1. angle A and B forms a linear pair i.e measures 180 degs

    so A = 180-71=109 degree


  2. 180-71 = 109°

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