**Radius**: A line segment that joins the center of a shape with any point on its circumference; the length of such a segment.

Resources for this term:

Evaluating Statements About Enlargements (2D and 3D)

Students compute perimeter, area, and volume using formulas and find relationships in perimeter, area, and volume after scaling.

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.