Jada is learning about the triangle congruence theorems: Side-Side-Side, Angle-Side-Angle, and Side-Angle-Side. She wonders if there are any theorems like these for parallelograms.
If 2 parallelograms have all 4 pairs of corresponding sides congruent, do the parallelograms have to be congruent? If so, explain your reasoning. If not, use the tools available to show that it doesn’t work.
In parallelograms and , segment is congruent to segment , segment is congruent to segment , and angle is congruent to angle . Are and congruent? If so, explain your reasoning. If not, use the tools available to show that it doesn’t work.
14.3
Activity
Come up with another criteria that is enough to be sure that 2 parallelograms are congruent. Try to use as few measurements as you can. Be prepared to convince others that your shortcut works.
