What is the measure of 2A, in degrees?
A. 60°
B. 120°
C. 150
D. Cannot be determined

Explanation:

Triangle ABC is isosceles because sides AB and AC are the same length (both 8 units long).

The angles opposite these congruent sides are known as the base angles, and they are congruent angles.

So the base angles B and C are 30 degrees each.

Next, we'll use the idea that for any triangle, the three angles always add to 180

So,

A+B+C = 180

A+30+30 = 180

A+60 = 180

A = 180-60

A = 120 degrees

step-by-step explanation:

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