Examples and properties of threedimensional shapes.
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CLASS: Basic 3
SUBJECT: Mathematics
TOPIC:Â Threedimensional shapes (Revision)
CONTENT:
Threedimensional shapes are shapes which can be measured in 3 directions. These shapes are also called solid shapes. They have Length,
width, and height which are the three measurements of the threedimensional shapes.
Examples of threedimensional shapes are:
Cube
Cuboid
Cylinder
Cone
Sphere
Threedimensional shapes have many
attributes such as:
Vertices
Faces, and
Edges.
Vertices: These are points where 3 edges meet.
Faces: These are the flat surfaces of the threedimensional shapes.
Edges: These are the line segment where two faces meet. Donâ€™t worry the diagram below will explain it better.
Examples and properties of threedimensional shapes.
 Cube, E.g dice, st. Luis cube sugar etc.
* It has 6 faces.
* It has 12 edges.
*It has 8 vertices.
Each face of a cube is square in shape.
 Cuboid, E.g rectangular box, rectangular cupboard etc.
* It has 6 faces
* It has 12 edges.
* It has 8 vertices.
Each face of a cuboid is rectangle in shape.
 Cylinder, E.g Gas cylinder, milo tin, milk tin etc.
* It has 2 circular faces.
* It has 1 curved surface.
* It has 2 circular edges.
 Cone, E.g Ice cream, Christmas cap etc.
* It has 1 circular base.
* It has 1 curved surface.
* It has 1 circular edge.
 Sphere, E.g balls
* It has no vertex.
* It has no edge.
* It has 1 curved surface.
EVALUATION:

List three objects in your environment that have the shape of cylinder.

List two objects in your environment that have the shape of sphere.

A cube has ________ vertices.

How many edges has a sphere?

Draw a cone.

State the three attributes of threedimensional shapes.