**Triangle**: A polygon with three sides and three angles.

Resources for this term:

Calculating Volumes of Compound Objects

This lesson unit is intended to help you assess how well students are able to solve problems involving measurement.

Geometry Problems: Circles and Triangles

Students use the properties of circles and triangles to find the relative areas of shapes in a pattern and explore alternative approaches to tackling the problem.

Evaluating Statements about Length and Area

Students critique conjectures about length and area and construct examples and counter-examples to refute or justify them.