Here are the Level 1 and Level 2 worked-out solutions for the triangle perimeter and area problems. Duration: 12:25

And here is the worked-out solution to the Level 3 triangle area problem. You remember the Pythagorean Theorem, right? Duration: 9:15

In under 15 minutes, we work through the Level 1 trapezoid perimeter and area problem. Once again, P-Thag. Duration: 14:07

And now, the worked-out solutions to the Level 2 and 3 trapezoid problems. Duration: 8:23

As has been the case with the previous videos, we take a look at the Level 1 circle problem, with a discussion about exact versus approximate answers. Duration: 13:33

And finally, here are the Level 2 and 3 worked-out solutions to the circle circumference and area problems. Duration: 7:57