A metronome is a device used to maintain a steady beat in music. The device has the shape of a pyramid. Identify the number of sides of the two-dimensional vertical cross-section.

Question

The two dimensional vertical cross section has how many sides?

(1 point)
Responses

5
5

4
4

2
2

3

Answer 1

A pyramid has a square base and triangular sides that connect the base to the apex. When you take a vertical cross-section of a pyramid, the resulting shape typically has the following characteristics:

• One edge along the base (which can be considered a single side).
• Two triangular edges on either side of the cross-section.
• One edge that connects the apex to the base edge.

This results in a shape that has 3 sides in total (2 sides from the triangular faces and 1 from the base).

Therefore, the two-dimensional vertical cross-section of a pyramid has 3 sides.

The correct response is 3.