Maths

Angles

An angle measures how far something has turned and it is measured in

degrees, which are symbolised with a little o sign after the number. We can

measure angles using an object called a protractor.

A full turn (coming back to the where you started from) is 360o.

A right angle is 90o and is one quarter of a full turn.

An angle which is less than a right angle (less than 90o) is called an acute

angle.

An angle which is more than a right angle but less than a straight line. (more

than 90o but less than 180o) is called an obtuse angle.

An angle which is greater than 180o is called a reflex angle.

All of the angles inside a triangle will always add up to 180o.

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