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If ∠C and ∠D are vertical angles and m∠C=x and m∠D=−3x+80, what is m∠C? I'm super lost, can someone help?
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If ∠C and ∠D are vertical angles and m∠C=x and m∠D=−3x+80, what is m∠C?

I'm super lost, can someone help?

User Ravash Jalil
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6.4k points

1 Answer

4 votes
Vertical angles are equal to each other, so:


x=-3x+80 4x=80 \tfrac{80}{4} = x x=20
User John Laffoon
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