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The vertex angle of an isosceles triangle measures 40°. What is the measure of a base angle?
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The vertex angle of an isosceles triangle measures 40°. What is the measure of a base angle?

User Barney Chambers
by
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2 Answers

3 votes

Answer:

B) 70°

Explanation:

User Jomia
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An isosceles has 2 same angle measures (base) and one vertext

180 - 40 = 140

Both angles of the base combined is 140

Divide by 2

140/2 = 70

The measure of one angle of the base is 70
User Xedret
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