Question

problem 5. (lesson 18) complete this sentence with the best of the choices given. pairs of vertical angles are ______. after you pick your answer press go. a. adjacent b. acute c. supplementary d. complementary e. congruent

Explanation:

Vertical angles are formed by two intersecting lines. By the Vertical Angles Theorem, vertical angles are always equal in measure, which means they are congruent. Adjacent angles share a common side and vertex, vertical angles do not (so A is wrong). Acute angles are less than 90°, vertical angles can be acute, obtuse, or right (so B is wrong). Supplementary angles sum to 180°, complementary to 90°; vertical angles are equal but not necessarily supplementary or complementary (so C and D are wrong). Thus, pairs of vertical angles are congruent.

Answer:

E. congruent