How to Name Angles Maths Tutorial

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We've covered what angles are and how to measure them in previous videos. In this video, we learn how to start naming them, based on their:
1. size
2. location.

Angles that are less than 90 degrees are called acute angles.
Angles that are exactly 90 degrees are called normal or acute angles.
Angles that are between 91 and 180 degrees are called obtuse angles.
Angles that are between 181 and 359 degrees are called reflex angles.

Angles that are inside a shape can be called interior or internal angles. Angles that are outside a shape can be called exterior or external angles. But angles don't need to be inside or outside shapes to be described as interior and exterior (as you'll see in the video).

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