Vertical angles must:
*check all that apply*

a. be congruent

b. be adjacent

c. be have the same vertex

d. be obtuse

A. Be congruent

C. Be have the same vertex

Step-by-step explanation:

Vertical angles are those angles that share the same vertex.

If the vertical angles are formed when two lines intersect in a plane, then they are opposite angles. That means they are congruent.

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

0.02040816326