7-2 Check for Understanding

Select all figures for which there exists a direction such that all cross sections taken at that direction are congruent.

Imagine an upright cone with its base resting on your horizontal desk. Sketch the cross section formed by a vertical plane not passing through the cone's topmost point.

Imagine an upright cone with its base resting on your horizontal desk. What type of polygon or shape would be formed by a horizontal plane passing through the cone?

Imagine an upright cone with its base resting on your horizontal desk. What type of polygon or shape would be formed by a diagonal plane passing through the cone?

Imagine an upright cone with its base resting on your horizontal desk. Match each plane with the image of the cross section formed by intersecting the plane with the cone.

Select all figure for which at least one cross section is a triangle.