+470 Triangles can be classified either according to their sides or according to their angles. All of each may be of different or the same sizes; any two sides or angles may be of the same size; there may be one distinctive angle.
Equilateral triangle: A triangle with all three sides equal in measure.
Isosceles triangle: A triangle in which at least two sides have equal measure
Scalene triangle: A triangle with all three sides of different measures
Right triangle: A triangle that has a right angle in its interior
Acute triangle: A triangle having all acute angles (less than 90°) in its interior
Equiangular triangle: A triangle having all angles of equal measure
