This program uses several levels to teach the following geometry terms: Acute, right, and obtuse angles, parallel lines, polygon, hexagon, pentagon, octagon, quadrilateral
trapezoid, parallelogram, rhombus, rectangle and square.
Click for a checklist of each level.
Basic Geometry 
This program quizzes you on basic geometry definitions and shapes.
Geometry Quiz 
A multiple choice quiz on basic third grade shapes.
Third Grade Geometry