Angles, Circles, and Lines Defined
Grade 9•45 minutes•Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
Learning Objective
I can define angle, circle, perpendicular line, parallel line, and line segment using the basic ideas of point, line, distance along a line, and distance around a circular arc.
Practice Questions
This lesson includes 11 practice questions to reinforce learning.
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1. Define parallel lines in your own words.
2. Explain the difference between intersecting lines and perpendicular lines.
3. Draw two lines that are intersecting but not perpendicular.
...and 8 more questions
Educational Video
Parallel, Intersecting, and Perpendicular Lines | Geometry | Math with Mr. J
Math with Mr. J