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What is the measure of a base angle of an isosceles triangle if its vertex angle measures 40°? a) 70° b) 65° c) 140° d) 75°
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4 votes
What is the measure of a base angle of an isosceles triangle if its vertex angle measures 40°?

a) 70°
b) 65°
c) 140°
d) 75°

User Pasosta
by
6.1k points

2 Answers

6 votes
Hello,
The sum of the angles or any triangle is always going to be 180°
So if the vertex angle is 40°, then each base angle is:
180 = 40 + 2x
x = (180 - 40) / 2
x = 70°

The answer is A.

Bye :-)
User Debashish
by
6.1k points
3 votes

Answer:

The Answer Is A. edge 2020

Explanation:

User Latika
by
6.6k points
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