The theory of continental drift proposes that the earth's continents may have once been united as a supercontinent but have drifted apart over time. what was the name of the supercontinent? americas laurasia pangaea gondwanaland

Rectangle qrst is shown. angle qrt is congruent to angle str, and angle str is complementary to angle qtr. which statement is true about angles qrt and qtr? they are congruent. they are complementary. they are supplementary. they are right angle