geometry

As an australian I never taught ASA      (although it would work)

I just taught   AAS   2 angles and a corresponding side.

so I taught

SAS        2 sides and the included angle

SSS       3 sides

AAS      2 angles and a corresponding side.

and

RHS    right angle, hypotenuse and one other side

Those 4 cover all triangle tests of congruency in triangles.

These properties are related to congruent triangles.  (triangles that are the same shape and size)

SAS

If two sides are the same length and the angle between them is the same then the triangles are conguent.

Two sides and included angle test of congruency in triangles.

SSS

Three sides  test of congruency in triangles.

If 2 triangles have there equal sides then they are congruent trianges.  :)

Also....ASA  ....Angle-Side-Angle....

The one that we have to be careful with is SSA....This may or  may  not produce congruent triangles.....as one of my former teachers might say.....Turning this around backwards may prevent you from making an "A*S" of yourself.....!!!

Or, as "Nauseated" might say.....turning it around backwards will help prevent CDD....!!!!