An acute angle is less than 90°. An obtuse angle is between 90° and 180°. A reflex angle is between 180° and 360°. The size of an angle can be estimated without using a protractor.

This KS2 maths article explores how an angle is a measure of a turn. Learn how to draw and measure angles using a protractor.

The Protractor sensor can enable your robot to find objects and navigate around with ease thanks to its ability to measure angles. Watch the demonstration video below to learn more about its ...