Classifying Triangles by Angles

Triangles have three sides and three angles - tri - (three) - angle (angles). The sum of all the angles in any triangle is 180°.
There are three different types of triangles:
Equilateral
Isosceles
Scalene

Equilateral triangles have three identical sides and identical angles.
Isosceles triangle have two side and two angles equal.
If the isosceles triangle has a right angle, its called a right isosceles triangle.
All of the sides and angles of a scalene triangle are different.
Scalene Triangle has all the sides and angles different.