Question

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

Explanation:

• Linear: Linear pair of angles sum to \(180^{\circ}\). But here the sum is \(90^{\circ}\) (right - angle), so this is incorrect.
• Congruent: Congruent angles have equal measures. There is no information to suggest \(\angle1=\angle2\), so this is incorrect.
• Complementary: Two angles are complementary if their sum is \(90^{\circ}\). Since \(\angle1+\angle2 = 90^{\circ}\) (right - angle), this is correct.
• Supplementary: Supplementary angles sum to \(180^{\circ}\). But here the sum is \(90^{\circ}\), so this is incorrect.

Answer:

complementary