Question

in each figure below, a plane passes through a geometric solid as shown. for each figure, choose the shape of the cross section formed.

Explanation:

Step1: Analyze Figure (a)

When a plane passes through a cone vertically (as shown in figure (a)), the cross - section formed is a triangle.

Step2: Analyze Figure (b)

When a plane cuts a sphere (figure (b)), the cross - section is always a circle.

Step3: Analyze Figure (c)

When a plane passes through a cylinder vertically (figure (c)), the cross - section formed is a rectangle.

Answer:

(a) Triangle; (b) Circle; (c) Rectangle