Question

Suppose the triangle rotates around its bisecting axis. Which 3-dimensional object is the result of the rotation?

A) cone
B) cylinder
C) pyramid
D) sphere

Suppose the circle rotates around its bisecting axis. Which 3-dimensional object is the result of the rotation?
A) cone
B) cylinder
C) pyramid
D) sphere

Answer 1

1) A) Cone, 2) D) Sphere.

Explanation:

1) A cone is generated by rotating the triangle around its bisecting axis. (Answer: A)

2) A sphere is generated by rotating the circle around its bisecting axis. (Answer: D)