Question

What is the measure of

Answer 1

120°

Explanation:

Every triangle adds up to 180°

We are already given one angle with is 30°.

Which is congruent to the other angle so there are two 30°, which make it 60°.

All we have to do now is subtract the total of the angle which is 180 and the angle given which is 30.

180- 60= 120

Hope this can Help!!

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Answer 2

120

Explanation:

triangle ABC is an isosceles triangle. Because it is an isosceles triangle, angle ABC is also 30 degrees. Knowing that all three angles add to 180, we can conclude that angle a is 120 degrees. (180-30-30=120)