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In an isosceles triangle, the ratio of the measure of the base angle to that of the vertex angle is 2: 1, what is the measure of the vertex angle? (A) 18 (B) 24 (C) 36 (D) 48 (5) 72
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1 vote
In an isosceles triangle, the ratio of the measure of the base angle to that of the vertex angle is 2: 1, what is the measure of the vertex angle?

(A) 18 (B) 24 (C) 36 (D) 48 (5) 72

User Gnosio
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7.1k points

1 Answer

4 votes

Answer:

2x + 2x + x = 180

5x = 180

x = 36°

The correct answer is C.

User Chris Arriola
by
7.4k points
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