Triangles
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掳
2. Isosceles
Isosceles triangles have 2 equal sides and 2 equal angles.
3. Right-angled
1 of the angles is a right angle (90掳) in right-angled triangles.
4. Scalene
Scalene triangles have no equal sides and no equal angles.
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