8. We live in a three-dimensional
world. Every object you can see or
touch has three dimensions that can
be measured: length, width, and
height. The room you are sitting in
can be described by these three
dimensions. The computer monitor
has these three dimensions. Even
you can be described by these three
dimensions. In fact, the clothes you
are wearing were made specifically
10. CUBOID
It has six faces which are all
rectangles.
Key Features:
Faces 6
Corners 8
Edges 12
11. CUBE
It has six faces which are all
squares.
Key Features:
Faces 6
Corners 8
Edges
1
2
12. PRISM
The shape of its cross-section is
the same throughout its length.
Key Features:
Faces, Corners, Edges?
It depends what sort of prism it is.
Examples of prisms include triangular prism, hexagonal
prism, cuboid, cube and cylinder.
13. TRIANGULAR PRISM
A prism with a triangular
cross-section.
Key Features:
Faces 5
Corners6
Edges 9
14. HEXAGONAL PRISM
A prism with a hexagonal cross-
section.
Key Features:
Faces 8
Corners12
Edges 18
15. CYLINDER
A prism with a circular cross-
section.
Key
Feature:
Faces, Corners and Edges:
The normal definitions of
faces, corners and edges are
not appropriate for a cylinder.
16. CONE
The point of the cone is directly
above the center of the circular
base.
Key
Feature:
Faces, Corners and Edges:
The normal definitions of faces,
corners and edges are not
appropriate for a cone.
17. SPHERE
Every point on the surface of
the sphere is the same
distance from the center.
Key Feature:
Faces, Edges and
Corners:The normal definitions of faces,
corners and edges are not
appropriate for a sphere
