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HELPP IM FAILING MATH RN!!

LC is 40°. What is the measure of arc CB?

HELPP IM FAILING MATH RN!! LC is 40°. What is the measure of arc CB?-example-1
User Secureboot
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2 Answers

18 votes
18 votes

I hope this helps you

HELPP IM FAILING MATH RN!! LC is 40°. What is the measure of arc CB?-example-1
User Noah Wilder
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13 votes
13 votes

Hi there!


\large\boxed{100^(o)}

∠C = 40° and triangle ABC is isosceles, therefore:

∠C = ∠A = 40°

Angles in a triangle sum up to 180°, so:

180 = 40 + 40 + ∠A

180 = 80 + ∠A

100 = ∠A

Thus, arc CB has a measure of 100°.

User TDSii
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