Triangle Congruence Theorem Exploration
For each challenge, click on the dots to drag and move the corners of triangle DEF.
Try to find a triangle with the same listed measurements, but that overall is not congruent to triangle ABC.
If you're not sure whether your triangle is congruent or not, click the check box in the bottom to show ALL the triangle measures and confirm.
# 1: Two Sides
#2: Three Sides
#3: Three Angles
#4: Two Sides, Angle Between
#5: Two Angles, Side Between
#6: Two Sides, Angle Not Between
#7: Two Angles, Side Not Between
Which tasks are impossible (and so prove that the triangles must be congruent)?