|
 Pyramids
have: |
|
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- triangular
side faces that meet at one vertex
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 |
 |
 |
| A
face is a flat surface. On prisms and pyramids faces
are polygons.
|
| An
edge is a line formed
by two faces.
|
| A
vertex is the point
where two or more edges meet. |
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Example:
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 |
Name the 3-dimensional figure.
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This tent is a
triangular pyramid.
It has 5 flat face, 8 edges, and 5 vertices.
A triangular pyramid
has to have 1 base,
and triangular side faces
that meet at one vertex.
This tent has 1 base,
and triangular side faces
that meet at one vertex, so that makes this tent a
triangular pyramid. |
 |
Remember:
Prisms have:
- 2 congruent
bases
- faces are
parallelograms
Pyramids
have:
- 1 base
- triangular
side faces that meet at one vertex
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Let's Practice!
click
here
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