Question

A equilateral triangle is rotated around an axis bisecting the triangle. what shape is formed

Answer 1

A right cone. If an equilateral triangle were to be cut in half then it would form a right triangle then if this right triangle were rotated 360 degrees it would form a right cone

Explanation:

Answer 2

A right cone. If an equilateral triangle were to be cut in half then it would form a right triangle then if this right triangle were rotated 360 degrees it would form a right cone with the diameter of the base being equal to the height of the cone.