3 years ago

Find the measure of angle A

Mathematics

1 answer:

Airida [17]3 years ago

3 0

Answer:

<h2><u><em>60° is your answer</em></u></h2>

Step-by-step explanation:

the sum of the interior angles of a triangle is 180°

180 - 70 = 110

110 = 12x + 2 + 15x

108 = 27x

108 : 27 = 4°

4 * 15 = 60° is your answer

check

15 * 4 + 12 * 4 + 2 + 70 = 180

60 + 48 + 72 = 180

the answer is good

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