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

asked Jan 22, 2021 71.6k views

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Answer:

70°

Explanation:

In an isosceles triangle the 2 base angles are congruent , thus

base angle =
(180-40)/(2) =
(140)/(2) = 70°

Bowofola answered Jan 29, 2021

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