Question

angles 1 and 2 form a right angle. which word describes their measures?
\bigcirc linear
\bigcirc congruent
\bigcirc complementary
\bigcirc supplementary

Explanation:

1. Recall the definitions:

• Linear pair: Angles forming a straight line (sum to \(180^\circ\)).
• Congruent: Angles with equal measure.
• Complementary: Angles whose sum is \(90^\circ\) (a right angle).
• Supplementary: Angles whose sum is \(180^\circ\).

1. Since Angles 1 and 2 form a right angle, their sum is \(90^\circ\). So they are complementary.

Answer:

complementary (the option corresponding to "complementary")