Play around with the triangles and figure out which each slider does. Also be sure to move the vertices of the triangles and take note of what happens :)
What do you notice about the two triangles? Are there any similarities or differences?
Side AB is congruent to side A'B' and side BC is congruent to side B'C'. Angles ABC and A'B'C' are also congruent. Play around with the points for a few minutes before answering the question below.
Is it possible to make a second triangle that is different from the first?
If there are two triangles that have two congruent sides with a congruent angle in the middle of the two sides, will the third sides be sometimes, never, or always congruent?