Mentor: There is one more family of quadrilaterals that we need to talk about. I need to tell you
about trapezoids. Trapezoids have exactly one pair of opposite sides that are parallel.
Student: Are those opposite sides
Mentor: They don't have to be. A trapezoid can look like this:
Student: Oh, so the other sides can look any way that you want them to?
Mentor: Right. However, the other sides cannot be
parallel because we say that trapezoids have
exactly one pair of parallel sides.
Student: Yeah, because if it had 2 pairs of parallel sides then it would be a parallelogram!
Mentor: That's very perceptive of you! Do you all remember what we called a triangle that had two
Student: That's an isosceles triangle.
Mentor: Right. So what do you think we call a trapezoid in which the two non-parallel sides are
Student: An isosceles trapezoid?
Mentor: Very good! Can you draw one of those?
Student: I think it would look like this:
Mentor: Very nice. Does everyone understand what trapezoids are now? You know many types of