Parallel Lines Teacher Resources
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Parallel Lines and Transversals: Lesson
3 mins 7th - 11th CCSS: Adaptable
Segment transversals proportionally. Given a diagram with three parallel lines and two transversals, the narrator of a short video points out the parallel lines cut the transversals proportionally. The portion of a long playlist on...
Parallel Lines in the Coordinate Plane: Lesson
4 mins 8th - 10th CCSS: Adaptable
Discover the parallel structure of parallel lines. Provided with two parallel lines on a coordinate plane, the presenter shows that the rise and run, or slope, of the two lines are the same. The resource, which is a portion of a larger...
Writing Equations for Parallel Lines
8th - 11th CCSS: Designed
Acquaint your class with the concept of parallel lines. Learners watch a PowerPoint presentation about how to write equations of parallel lines. Their understanding of linear equations and slope is taken a step further by the exercises...
Looking More Carefully at Parallel Lines
9th - 10th CCSS: Designed
Can you prove it? Making assumptions in geometry is commonplace. This resource requires mathematicians to prove the parallel line postulate through constructions. Learners construct parallel lines with a 180-degree rotation and then...
Distance Between Parallel Lines: Lesson
4 mins 9th - 12th CCSS: Adaptable
Rely on slope when counting won't do. Using horizontal and vertical parallel lines, the presentation shows scholars how to find the distance by counting. The video uses the relationship of the slopes of perpendicular lines to find two...
Families of Parallel Lines and the Circumference of the Earth
9th - 10th CCSS: Designed
How do you fit a tape measure around the Earth? No need if you know a little geometry! Pupils begin by extending their understanding of the Side Splitter Theorem to a transversal cut by parallel lines. Once they identify the proportional...
Proving Slope Criterion for Parallel Lines 1
9th - 12th CCSS: Designed
Parallel lines and the slope formula...two seemingly distinct concepts, but a connection exists nonetheless. Young mathematicians prove that if two lines are parallel, then their slopes are equal. They have the option of using a...
Parallel Lines and Transversals
2 mins 6th - 10th CCSS: Adaptable
Eight is the lucky number of angles when a line crosses two parallel lines. Scholars watch a concise video in the Socratica Geometry series to learn about angles made by parallel lines and a transversal. Using corresponding and vertical...