Drag the red points in the top half of the drawing to adjust the givens, then adjust the points to try to make congruent or non-congruent triangles in the bottom half.
Change the middle (orange) side length. Can you make a triangle that is NOT CONGRUENT?
Change the left (blue) side length. Can you make a triangle that is NOT CONGRUENT?
Is Side-Side (SS) enough to prove two triangles are congruent?