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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 Tejan
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1 Answer

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In all triangles, inner angles add to 180 degrees.
In an isosceles triangle, the base angles are the same and the vertex angle is different from the rest.

b= (180-40)/2
b= 140/2
b=70

Final answer: 70 degrees
User Reuben Bijl
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