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IrinaVladis [17]
3 years ago
15

What is the measure of

Mathematics
2 answers:
Leni [432]3 years ago
4 0

Answer:

  • 39°

Step-by-step 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°
Bond [772]3 years ago
3 0
I think it’s 39 cuz we have to subtract it by 180(supplementary angles) plus the angle is an obtuse angle(meaning more than 0 but less than 90)
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Have a great day :)

Hope this helps !

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