National Council of Teachers of Mathematics
The Math Forum: Plane Figure
This site provides a definition for plane figure (at the top of the page) and a few examples.
Better Lesson
Better Lesson: Geometry Shape Book
Third graders develop their understanding of the importance of different 2-dimensional shapes by finding real world examples.
Alabama Learning Exchange
Alex: Swimming Pool Math
Students will use a swimming pool example to practice finding perimeter and area of different rectangles.
CK-12 Foundation
Ck 12: Defining Rotations
[Free Registration/Login may be required to access all resource tools.] In this tutorial, students learn about the rules that operate in the rotation of 2-D figures on a coordinate grid. Includes video, lots of examples, review...
Texas Education Agency
Texas Gateway: Using Properties of Transformations
Given examples of mathematics in the real world, the student will use properties of transformations and their composites to describe and perform transformations of figures in a plane.
Khan Academy
Khan Academy: Congruence and Transformations
Given a pair of figures in the coordinate plane, try to map one onto the other and determine whether they are congruent. Includes examples of glide reflections. Students receive immediate feedback and have the opportunity to try...