Question

question 1-2
the two - dimensional figure will be rotated 360° around the axis of rotation shown below. which three - dimensional figure will be created as a result of the rotation?
options:
triangular pyramid
rectangular pyramid
cone
cylinder

Explanation:

The given two - dimensional figure is a right - angled triangle. When a right - angled triangle is rotated 360° around one of its legs (the axis of rotation here), the three - dimensional figure formed is a cone. A triangular pyramid is formed by rotating a triangle around a non - leg side in a different way, a rectangular pyramid is formed from a rectangle - based triangle - like figure rotation (not a right - angled triangle rotated about a leg), and a cylinder is formed by rotating a rectangle. So the figure formed by rotating this right - angled triangle about the given axis is a cone.

Answer:

Cone