Angles - turning round the point.
- Author:
- Robyn, My Geometry Resources, ewegner, Duane Habecker
Types of angles
Manipulate points A, B or C below to discover the different types of angles and what degrees define them.
Note each of the different angles in your workbook and their definitions.
Can you think of any others?
Watch this video to remind you of all the different angles.
Check the angles you notes in your workbook - did you get them all? Add any you might have missed.
Calculating angles
Can you calculate the angle using the protractor?
**Remember to match the centre of the protractor with the vertex of the angle (match blue dots) and zero the line (with red dot) on one line - measuring the angle to the other line.
Complete 10 different examples below and write the angle and the type of angle for each in your workbook.
Don't forget - the reflex angle is calculated by subtracting the acute angle from 360