Question

In a parallelogram ABCD, what is∠B + ∠C?

Answer 1

Step-by-step explanation:

Given , ∠ A =80

Here , ∠ A + ∠ B =180

∠ B =180−80

∠ B =100

The opposite angles of a parallelogram are equal.

Hence , ∠ C = ∠ A = 80

∠ B = ∠ D = 100

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