Angle-Side-Side Doesn't Work
If the congruent angles are not included between the congruent sides, then we have SSA or ASS. These do not imply the two triangles are congruent, as the following illustrates:
In this case, 
, 
, and 
, yet the triangles are clearly not congruent since they have different shapes.
Content ©2008. All Rights Reserved.
Date last modified: October 10, 2008.