Cube (Hexahedron) Facts
Notice these interesting things:
It has 6 Faces
Each face has 4 edges (and is a square)
It has 12 Edges
It has 8 Vertices (corner points)
and at each vertex 3 edges meet
It is one of the Platonic Solids
| cut out the shape and glue it together. |
A cuboid is a box-shaped object.
It has six flat faces and all angles are right angles.
And all of its faces are rectangles.
It is also a prism because it has the same cross-section along a length. In fact it is a rectangular prism.
Sphere Facts
Notice these interesting things:
- It is perfectly symmetrical
- All points on the surface are the
same distance from the center - It has no edges or
vertices (corners) - It is not a polyhedron
Notice these interesting things:
- It has a flat base
- It has one curved side
- It is not a polyhedron as it
has a curved surface
Cylinder Facts
Notice these interesting things:
- It has a flat base and a
flat top - The base is the same as
the top, and also in-between - It has one curved side
- It is not a polyhedron as it
has a curved surface
Pyramids
When we think of pyramids we think of the Great Pyramids of Egypt.
They are actually Square Pyramids, because their base is a Square
Parts of a Pyramid
A pyramid is made by connecting a base to an apex
Types of Pyramids
There are many types of Pyramids, and they are named after the shape of their base.
| Pyramid | Base | ||
| Triangular Pyramid: |  |  | |
|---|---|---|---|
| Square Pyramid: |  |  | |
| Pentagonal Pyramid: |  |  |
Right vs Oblique Pyramid
This tells us where the top (apex) of the pyramid is. When the apex is directly above the center of the base it is a Right Pyramid, otherwise it is an Oblique Pyramid.
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