In quadrilateral $ABCD$, sides $\overline {AB}$ and $\overline {DC}$ have equal length and are parallel to each other. Point $P$ is the intersection of the diagonals $\overline {AC}$ and $\overline {BD}.$ How many pairs of congruent triangles are in the figure?
Have you tried drawing it? What type of quadrilateral does it have to be?
Can you take a shot of what you have done or can you explain what you have done and your difficulties.
If you drae it properly you can probably work it out yourself.
Please no one else jump in. We are supposed to be encouraging people to find their own answers.