Classifying triangles

Right triangle: A triangle that contains one right angle

Obtuse triangle: A triangle that contains one angle that is greater than 90 degrees

Acute triangle: A triangle that contains one angle that is greater than 90 degrees

Scalene triangle:A triangle where all three sides have different lengths, and consequently, all three angles also have different measures

Isosceles triangle: A triangle with two sides of equal length

Equilateral triangle: a triangle with all three sides of equal length, and all three interior angles are also equal, measuring 60 degrees each