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 Related Terms
 Triangle:  A polygon with three sides.
Polygon: A closed figure formed by three or more line segments.
Triangle, Acute: A triangle with three acute angles.
Isosceles Triangle: A triangle with at least two sides having equal lengths.
Equilateral Triangle: A triangle with three equal sides.
Acute Triangle: A triangle with three acute angles.
Obtuse Triangle: A triangle with one obtuse angle.
Equiangular Triangle: A triangle with equal angles
Scalene Triangle: A triangle with no equal sides.