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In the diagram, mcd=128º and mpA=76º. What is McABC?
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30 votes
30 votes
In the diagram, mcd=128º and mpA=76º. What is McABC?

In the diagram, mcd=128º and mpA=76º. What is McABC?-example-1
User Wei Li
by
2.9k points

1 Answer

15 votes
15 votes

Answer:

  • D. 102°

Explanation:

  • m∠ABC =
  • m∠ABD + m∠CBD = Angle addition postulate
  • 1/2mCD + 1/2mAD = Angle measure is the half the intercepted arc
  • 1/2(128) + 1/2(76°) =
  • 102°
User Matheus Hatje
by
2.7k points
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