Mathematics
GEOMETRY
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GEOMETRY
In this topic students will learn geometrical instruments, drawing geometrical figures, construction of different types of angles and measures of angles
Geometrical instruments
Geometrical instrumentsare tools used to draw, measure, and construct geometric figures accurately.
Geometrical Instruments
Identify geometrical instruments
Activity 1
The picture below shows some of geometrical instruments
Activity 2
Observe the following set of geometrical instruments and their proper names
Geometrical instruments and their uses
Use geometrical instruments to draw geometrical figures
Activity 3
Construction of a circle
Exercise 1
Construct the following figures
- Circle of radius 7cm
- Circle of radius 10 cm
- Circle of radius 6cm
- Circle of diameter 8cm
- Circle of diameter 10cm
Construction of rectangle
Exercise 2
Construct the following rectangles
- Rectangle of 5cm by 8cm
- Rectangle of 14 cm by 10cm
- Rectangle of 6cm by 7 cm
- Rectangle of 5cm by 9cm 5.
- Rectangle of 10 cm by 5 cm
Select appropriate geometrical instruments to construct any given geometrical figures
Activity 4
Study careful the chart below
Exercise 3
Do the following exercise
Angles
An angle is a figure formed when two rays (or line segments) meet at a common point. The common point is called the vertex The two rays are called the arms (or sides) of the angle
Identify types of angles
Activity 5
Observe the and study the following
Activity 6
Read careful following chart
Exercise 4
Observe the following pictures, and identify each angle
Draw types of angles
Activity 7
Draw acute angle Steps of drawing acute angle
Steps for drawing right angle (900). Read the following information
Exercise 5
Do the following exercise
Measure angles correctly
Activity 8
The steps to draw an angle
The pictures below shows how to measure angles
Exercise 6
Use protractor measure the following angles
Exercise 7
Choose the correct answer from the following figures
Listening to this topic
