As well as right angles, there are also acute and obtuse angles. An acute angle is very easy to spot; it is any angle smaller than a right angle (0-89 degrees – ah, cute!).

An angle is the amount of turn between two lines. Angles are measured in degrees with the symbol °. Angles can be sorted into types depending on how big they are: acute close acute An angle less ...

If an angle is greater than 90 degrees, but less than 180 degrees, it's called an obtuse angle. An angle greater than 180 degrees, but less than 360 degrees is called a reflex angle. SUBJECTS: Maths ...