Types of angles
When we estimate and compare angles, we need to have something to compare them to. We begin with a revolution, and later we use a right angle as the angle of comparison.
Revolution
We start with a revolution, which is a full turn around the vertex and is equal to 360°.
Straight angle
A straight angle is half a revolution; the arms of the angle make a straight line. A straight angle measures 180°.
  |
This publication is funded by the Australian Government Department of Education, Employment and Workplace Relations |
Terms of use  |
