A one-pager featuring 2-D quadrilaterals.

Look at the properties of 2D shapes to see which shapes can belong to the same group. Includes hints.

In this exercise, students practice applying the properties of shapes. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

This tutorial provides illustrations for regular 2-D shapes as well as a definition for polygons and for regular polygons.

Classify shapes based on pictures or attributes, such as angle types and side-lengths. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

[Free Registration/Login may be required to access all resource tools.] The video describes how to classify a real-world object as a circle, triangle, square or rectangle. The video is followed by additional practice problems.