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What is the measure of
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What is the measure of

What is the measure of-example-1
User UX Labs
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1 Answer

4 votes

Answer:

  • 39°

Explanation:

∠ABC is marked as right angle, 90°.

∠ABD and ∠CBD are complementary angles, so their sum is 90°.

  • m∠ABD = 90° - m∠CBD = 90° - 51° = 39°
User KostasRim
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