Lesson 18 — Activity 3: Drawing Angles

Getting Ready

You have worked with determining angle type: acute, right, obtuse, and straight. You have also worked on measuring angles using a protractor. You will now practise drawing your own angles.

This image shows examples of different types of angles.
Image courtesy of www.imagesgoogle.com 

When you begin creating an angle of a specific measurement, you will need to create a straight line along the 00 line (or vertex). Use a straight edge of a ruler to make your line.

You can use these tools to draw angles.
Image courtesy of www.imagesgoogle.com 

When you know the measurement of the angle you are trying to create, you can then put your protractor over the first line you drew, do your measurement, make a "tick mark" with a pencil, and then using a straight edge, create a line that intersects (meets) the 00 line.

In the example below for the 50° angle, the pink line was drawn first using a straight edge. The blue line was drawn after measuring the angle with the protractor, making a tick mark and then using a straight edge to intersect the first line.

Don't forget to use a straight edge to create your lines and measure using a protractor!

                  This image shows how to draw an angle.

Digging Deeper

Watch the following video for a further explanation on how to draw angles.

Try This:

Click here to practise drawing angles. Answers are provided for you.