How do you classify triangles?

3 differnet types of triangles

1. Equilateral triangle (all lines are same length and every angle is 60 degrees)

2. Isoceles triangle (2 of the 3 lines are the same length and all 3 angles add to 180 degrees.

3. Scalene triangle (all 3 lines are different length but all angles add to 180)

Hope I helped