All of the following statements are true except —
a. Congruent supplementary angles each measure 90 degrees.
b. Vertical angles share a common vertex.
c. Adjacent angles are congruent.
d. Complementary angles are acute.
a. Congruent supplementary angles each measure 90 degrees.
b. Vertical angles share a common vertex.
c. Adjacent angles are congruent.
d. Complementary angles are acute.