Mathematics
GEOMETRY
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
Identify geometrical instruments
Activity 43
The picture below shows some of geometrical instruments
Activity 44
Observe the following set of geometrical instruments and their proper names
Geometrical instruments and their uses
Use geometrical instruments to draw geometrical figures
Use geometrical instruments to draw geometrical figures
Activity 45
Construction of a circle
Exercise 36
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 37
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
Select appropriate geometrical instruments to construct any given geometrical figures
Activity 46
Study careful the chart below
Exercise 38
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
Identify types of angles
Activity 47
Observe the and study the following
Activity 48
Read careful following chart
Exercise 39
Observe the following pictures, and identify each angle
Draw types of angles
Draw types of angles
Activity 49
Draw acute angle Steps of drawing acute angle
Steps for drawing right angle (900). Read the following information
Exercise 40
Do the following exercise
Measure angles correctly
Measure angles correctly
Activity 50
The steps to draw an angle
The pictures below shows how to measure angles
Exercise 41
Use protractor measure the following angles
Exercise 42
Choose the correct answer from the following figures
Listening to this topic
