1/14
9th Grade
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
Prism
a 3D solid in which the 2 bases are congruent
Lateral faces are rectangles
Rectangular Prism

Triangular Prism

Pyramids
3D solid with one base
Lateral faces are triangles that meet at a vertex
Square Pyramid

Triangular Pyramid

Non-Polyhedrons
3D shape that has at least one curved surface
Cylinders
Cones
Cylinders
a 3D solid with 2 identical circle bases and one curved side

Cones
a 3D solid with one circle base that tapers smoothly to a vertex point

Height for the 3D shapes
Prisms & Cylinders - Height is perpendicular distance between bases
Pyramids & Cones - Height is perpendicular distance between vertex and base
Right
Lateral edges are perpendicular to base angles

Oblique
Lateral edges are NOT perpendicular to base edges

Nets
When a 3D solid is unfolded into 2D figures

Cross Section
When a 3D solid is sliced to reveal a 2D figure
Any cross section parallel to a base is the same shape as the base*

A Solid of Revolution
When a 2D figure is swept around a line forming a 3D solid
Commonly used figures:
Triangle → Cone
Rectangle → Cylinder
Semi Circle → Sphere