1. if ∠A and ∠B are supplementary angles, then m∠A + m∠B = ____.
a. 100° b. 80° c. 180° d. 90°
2. if m∠A + m∠B = 90°, then ∠A and ∠B are ____ angles.
a. cute b. right c. complementary d. supplementary
3. ∠A and ∠B are supplementary. if the measure of m∠A = 70°, then m∠B = _____.
a. 20° b. 30° c. 110° d. 60°
4. the symbol " ≅ " means ____.
a. not equal to
b. perpendicular
c. congruent
d. parallel
5. linear pair is composed of two non-adjacent angles.
a. true b. sometimes c. false d. cannot be determined
Pls answer it correctly guys, I'll give you 1 THANKS and a 5-stars-vote if you answer this correctly. Thanks in advance!