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Triangle Types

A triangle is a three-sided shape. There are different types of triangles.

Triangle types based on side length:
Equilateral Triangle
All three sides are equal length.
Isosceles Triangle
Two sides are equal length.
Scalene Triangle
Three unequal sides.

Triangle types based on angles:

Acute Triangle
All three angles are acute, or less than 90o.
Right Triangle
One angle is 90o.
Obtuse Triangle
One angle is obtuse, or greater than 90o.

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