Answer:
You use it by going counter-clockwise on a triangle and explaining what is given.
A,S,A = angle, side, angle
S,A,S = side, angle, side
A,A(or HL) = angle, angle(or hypotnuse leg)
A,S,S = angle, side, side
Each one of these is used to show how two triangles are similar.
(forget the comma's brainly just thinks that the last one is the other thing and not an acronym so I had to add them)
