What are the types of triangle?


There are 4 types of triangle. They all have 3 sides and are polygons.

1. Equilateral

Equilateral triangles have 3 equal sides and 3 equal angles of 60°

2. Isosceles

Isosceles triangles have 2 equal sides and 2 equal angles.

3. Right-angled

1 of the angles is a right angle (90°) in right-angled triangles.

4. Scalene

Scalene triangles have no equal sides and no equal angles.

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