Activity
Texas Instruments

Texas Instruments: Undefined Terms and Definitions

For Teachers 9th - 10th Standards
This is a LearningCheck quiz on undefined terms in the beginning of Geometry.
Unit Plan
Oswego City School District

Regents Exam Prep Center: Lines and Planes

For Teachers 9th - 10th
Use these resources in preparing instruction on undefined terms (points, lines, and planes), theorems relating lines and planes, and Euclidean and non-Euclidean geometry. You'll find three lessons on the aforementioned subject areas, an...