Big Ideas Math Integrated I, 2016
BI
Big Ideas Math Integrated I, 2016 View details
6. Describing Pairs of Angles
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Exercise 23 Page 429

What does the word adjacent mean?

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The word adjacent means that two things are directly next to each other, they are touching. If two angles are adjacent, they must share a side and a vertex. Therefore, ∠ 2 and ∠ 4 cannot be adjacent because they do not have a common vertex.


The angles that are adjacent to ∠ 2 are ∠ 1 and ∠ 3.