Question

a cone is sliced vertically as shown. what shape is the cross - section? rectangle trapezoid circle triangle

Explanation:

Step1: Recall cross - section concept

A vertical slice of a cone passes through its vertex and the base diameter.

Step2: Visualize the shape

The resulting cross - section has three sides. Two sides are straight lines from the vertex to the base and the third side is a straight line across the base diameter. This forms a triangle.

Answer:

triangle