Question

question 8 of 10
vertical angles must
check all that apply.
a. be acute.
b. have the same vertex.
c. be congruent.
d. be complementary.

Explanation:

Vertical angles are formed when two lines intersect. They share the same vertex and are always congruent. They can be acute, obtuse or right - angled, and are not necessarily complementary.

Answer:

B. have the same vertex, C. be congruent