Student Tutorial: Geometry Basics: Parallel and Perpendicular Lines
Instructions:
Learn about parallel and perpendicular lines. For this tutorial you'll be using the Desmos Geometry Tools, which are free: https://www.desmos.com/geometry. Watch the video and follow along using the Desmos tools.
Click the arrows on the bottom to get started
![Math Clip Art: Student Tutorial Title Page](/sites/default/files/library-assets/images/TitleCardTemplate_0.png)
![Parallel Lines. Two coplanar lines that don’t intersect. In Coordinate Geometry, the graphs of two linear functions with the same slope.](/sites/default/files/library_asset/images/Definition--GeometryBasics--ParallelLines.png)
![Perpendicular Lines Two coplanar lines that intersect at right angles. In Coordinate Geometry, the graphs of two linear functions with slopes that are negative reciprocals.](/sites/default/files/library-assets/images/Definition--GeometryBasics--PerpendicularLines.png)
![Parallel and Perpendicular Lines Title Card](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines01.png)
![Whenever lines intersect, they form four angles.](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines02.png)
![Here are the four angles.](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines03.png)
![There is one case where two lines don’t form any angles. This is the case where the lines are parallel.](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines04.png)
![Line L is parallel to line M.](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines05.png)
![Two lines are parallel if they are coplanar and don’t intersect.](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines06.png)
![Parallel lines never touch, no matter how long the lines are.](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines07.png)
![Parallel lines are always the same distance apart.](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines08.png)
![Perpendicular lines intersect at right angles.](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines09.png)
![Line L is perpendicular to Line M.](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines10.png)
![Perpendicular lines form four 90° angles.](/sites/default/files/library_asset/images/GeometryBasics--ParallelPerpendicularLines11.png)
Desmos Geometry Exploration: Parallel and Perpendicular Lines
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