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Why SSA and AAA are not Congruence Shortcuts

Videos, worksheets, games and acivities to help Geometry students learn triangle congruence by hypotenuse leg (HL).

Why SSA and AAA Don't Work as Congruence Shortcuts
Four shortcuts allow students to know two triangles must be congruent: SSS, SAS, ASA, and AAS. Knowing only side-side-angle (SSA) does not work because the unknown side could be located in two different places. Knowing only angle-angle-angle (AAA) does not work because it can produce similar but not congruent triangles.

Why SSA is NOT a congruence shortcut.
Explains why side-side-angle (SSA) is not a shortcut to prove congruence of two triangles.

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