One of the base angles of an isosceles triangle is 49°. What is the measure of the vertex angle?

Question

crisforp · Answer

180 - 2*49 = 180 - 98 = 82;

Anonymous · Answer

The vertex angle of an isosceles triangle with base angles of 49° measures 82°. This is calculated using the fact that the sum of the angles in a triangle is 180°. By subtracting the sum of the two base angles from 180°, we find the vertex angle. 
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One of the base angles of an isosceles triangle is 49°. What is the measure of the vertex angle?

Answer (2)

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