Co-interior Angles in Parallel Lines: Identifying α, β, γ, and δ

Lines a and b are parallel.

Which of the following angles are co-interior?

αααβββγγγδδδaaabbb

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00:05 Which angles are adjacent?
00:09 Adjacent angles sit next to each other on the same line.
00:14 These angles add up to one hundred eighty degrees.
00:19 And that's how we solve this question!

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1

Understand the problem

Lines a and b are parallel.

Which of the following angles are co-interior?

αααβββγγγδδδaaabbb

3

Final Answer

α,γ \alpha,\gamma

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If one of two corresponding angles is a right angle, then the other angle will also be a right angle.

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