Curated OER
Trapezoids
In this trapezoids worksheet, 10th graders solve 5 different problems related to trapezoids and applying the appropriate theorem. First, they define a trapezoid, including its bases, legs, and base angles. Then, students use the...
University of California
Geometry Junkyard
An interesting junkyard of geometry findings where people are free to add their own findings and sift through others' interesting additions.