Interactive
Curated OER

Geometry

For Students 9th - 10th
In this geometry worksheet, students identify the different shapes created by nets. They also identify the intersection of lines and planes. There are 5 questions with an answer key.
Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Proof Without Words: Completing the Square

For Students 9th - 10th Standards
Use this interactive geometric proof to complete the square using geometry.