A rectangular pyramid is mounted on a right rectangular prism as shown. How many edges and vertices does the figure shown have? A. 15 edges and 9 vertices
B. 15 edges and 8 vertices
C. 16 edges and 9 vertices
D. 9 edges and 16 vertices

C) 16 edges and 9 vertices

Step-by-step explanation:

C) 16 edges and 9 vertices (corners)

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh