Which of india's regions is the most highly populated? a. the himalayan mountains b. the ganges river valley c. the mouth of the tonle sap river d. the island of java

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