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Types of Triangles
A triangle has three sides and is made of straight lines. A
triangle may be classified by how many of its sides are of
equal length. Or, it may be classified by what kind of angles
it has.
The three angles always add to 180°
Types of Triangles by Length
Types of Triangle by Angle - Acute, Obtuse,   Right Triangle,
and Equiangular Triangle
Equilateral, Isosceles and Scalene
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Triangles are 3 sided polygons.
A triangle has three sides and three angles.

The three angles always add to 180°
types of triangles by length
types of triangles by angle