Please help! ABCD is a parallelogram if CDA equals 57 then what does BCD =?

Yumei asked Mar 26, 2023

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Yumei asked Mar 26, 2023

by Yumei

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10 votes

Answer:

∠ BCD = 123°

Explanation:

adjacent angles are supplementary , sum to 180°

∠ CDA and ∠ BCD are adjacent angles , then

∠ BCD + 57° = 180° ( subtract 57° from both sides )

∠ BCD = 123°

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