Question

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which relationships describe angles 1 and 2?
select each correct answer.
□ supplementary angles
□ vertical angles
□ adjacent angles
□ complementary angles

Explanation:

1. Adjacent angles: Angles 1 and 2 share a common vertex and a common side, with no overlapping interior, so they are adjacent.
2. Complementary angles: The right angle marker shows the total of angles 1 and 2 is $90^\circ$. Complementary angles sum to $90^\circ$.
3. They are not supplementary (sum to $180^\circ$) or vertical (opposite each other at an intersection).

Answer:

adjacent angles
complementary angles