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What is the measure of ∠R

What is the measure of ∠R-example-1
User Vitalik
by
4.3k points

1 Answer

5 votes

77 degrees

Explanation:

The triangles are similar so all the angles would be congruent.

63 + 40 + r = 180

103 + r = 180

-103 -103

r = 77

I hope this helps have a good day!

User Augustina
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4.5k points