Geometry P.4

This Unit is about Geometry which is studied in Primary Four.

Triangle

A triangle is a three sided polygon.

 

Types of triangles

  1. Right angled triangles

Triangles

 

 

 

 

 

 

 

 

 

 

 

Pentagon

It is a five sided figure

Pentagon

 

SOLID SHAPES.

A solid shape has faces, edges and vertices.

Example

Sphere, cone, cuboid, cube, pyramid, prism, cylinder, etc.

Shapes

 

Solid Figures

 

Constructing an angle of 90◦

 

Steps;

  • Draw a line of any length
  • -mark the centre on the line
  • -open the compass to any length
  • -stand at the centre and mark equidistant points on either sides
  • -stand on each point and mark crossing arcs
  • -draw a line to pass through the crossing arcs and the centre.

 Finding the missing angles on a right angle.

Angles

 

 

 

 

Angles 2

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