The assertion is that when all three angles match, the triangles sides must also match. If there is not counter-example, then we accept this to be true. If you can make a triangle whose angles match, but the sides are different, you found a counter-example and the assertion is not true.[br][br]DIRECTIONS: [br][br]Drag the red points of the Givens in the top half of the drawing to adjust the chosen angle measures. [br][br]Then adjust the points of each triangle to try to make congruent and non-congruent triangles in the bottom half.