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HELP 100 POINTS What is the measure of ∠A in the image below?

HELP 100 POINTS What is the measure of ∠A in the image below?-example-1

2 Answers

5 votes

Opposite angles are equal


\\ \rm{:}\dashrightarrow 3x=x+30


\\ \rm{:}\dashrightarrow 2x=30


\\ \rm{:}\dashrightarrow x=15

So

  • <A=3(15)=45
User Charlesthk
by
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2 votes

Answer:

A. m∠A = 45°

Explanation:

Vertical angle theorem: opposite angles are congruent

⇒ 3x = x + 30

⇒ 2x = 30

⇒ x = 15

As m∠A = 3x

⇒ m∠A = 3 × 15 = 45°

User Brysgo
by
7.9k points

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