Google Classroom

GeoGebra Classroom

Cross Sections of Triangular Pyramids

Author:MrsBond, Anthony OR 柯志明

Drag the blue points to see the different sections of the triangular pyramid.

Anthony Or. GeoGebra Institute of Hong Kong

Move the Rotate 1 slider to the left, labeled Horizontal and answer Question 1 below.

1. What is the shape of the cross section formed by slicing the rectangular pyramid horizontally?

Select all that apply

A
Rectangle (2 sets of parallel lines, 4 90-degree angles)
B
Triangle (3 sided polygon)
C
Trapezoid (4 sided shape, only 1 pair of parallel lines)

Check my answer (3)

Move BOTH rotate sliders to the right. Rotate 1 slider should be moved so it's labeled Vertical. Answer Question 2 below.

2. What is the shape of the cross section formed by slicing the rectangular pyramid vertically?

Select all that apply

A
Rectangle (2 sets of parallel lines, 4 90-degree angles)
B
Triangle (3 sided polygon)
C
Trapezoid (4 sided shape, only 1 pair of parallel lines)

Check my answer (3)

Move Rotate 1 slider to the MIDDLE and keep Rotate 2 slider to the RIGHT. Answer Question 3 below.

3. What is the shape of the cross section formed by slicing the rectangular pyramid diagonally so it cuts through one side face AND the Base?

Select all that apply

A
Rectangle (2 sets of parallel lines, 4 90-degree angles)
B
Triangle (3 sided polygon)
C
Trapezoid (4 sided shape, only 1 pair of parallel lines)

Check my answer (3)

New Resources

Discover Resources

Discover Topics