Obtuse- A triangle that has an angle greater than 90°
Acute-A triangle that has all angles less than 90° (90° is called a Right Angle)
Equilateral-A triangle with all three sides of equal length.
Right- A triangle that has a right angle (90°)
Isosceles-A triangle with two equal sides The angles opposite the equal sides are also equal.
Scalene-A triangle with all sides of different lengths. No sides are equal and no angles are equal.