The sliders can be used to change the size of two angles and the length of the side between them on both triangles.
Points A and D can be used to drag each triangle, while points B and E can be used to rotate the triangles.

What observations can be made about the other sides and angles of the two triangles?
What conjecture can you make about two triangles when they have two of the same angles and the side length between those angles are congruent?