Parallel Lines Teacher Resources

In this activity, students create parallel lines and a transversal, and study the properties of the lines and their angles.

This activity allows students to: 1. Identify the pairs of angles formed when a transversal intersects two lines.: 2. Measure angles Using Cabri Jr. 3. Identify relationships between pairs of angles when a transversal intersects parallel...

[Free Registration/Login Required] Students explore the concept of parallel lines by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the...

Using Cabri Jr, the students (with the teachers help) will create parallel lines cut by a transversal, measure angles, and compare the relationships of the angles formed using features of the Cabri Jr.

Construct parallel lines in Cabri Jr., and students label and check if all corresponding angles are congruent.

In this activity, students learn and increase their knowledge about the angles formed when parallel lines are cut by a transversal.

Try these three problems about finding the measures of different angles that arise from diagrams involving parallel lines and transversals. Detailed solutions are written out for these three problems of moderate difficulty.

Video tutorial discusses the relationships among angles formed when a transversal intersects parallel lines. [5:54]

Use this site to learn about the fourth locus theorem regarding parallel lines. Click on the "Topic Index" link to find related practice activities and resources.

Get the definition for parallel lines and explore angles associated with parallel lines.

This video demonstrates how to determine if lines are parallel given the equations. There are three equations listed and the lines that are parallel will contain the same slope. Practice problems available. [3:48]

This video demonstrates how to find the equation of a line when given a point on the line and the equation of a line parallel to that line. The equation given is not in slope-intercept form. [4:24]

This video demonstrates how to determine if lines are parallel given the equations. There are three equations listed but they are not all in slope-intercept form. Practice problems available. [3:03]

This video demonstrates how to determine if lines are parallel given the equations. There are three equations listed but they are not all in slope-intercept form. Practice problems available. [2:42]

Proof by contradiction that if two lines cut by a transversal create congruent corresponding angles then the lines are parallel. [5:18]

Watch this tutorial [2:56] to see how to use the given equation to find the slope of the first line and since we know that parallel lines have the same slope, that's the slope of the second line.

[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to use the Triangle Proportionality Theorem with multiple parallel lines.

This lesson presents how to write an equation of a line that passes through a given point and is parallel to a given line. It is 2 of 5 in the series titled "Writing a Linear Equation from a Parallel Line and Point."

In this lesson on parallel lines and transversals, 8th graders explore the characteristics and how to draw parallel and transversal lines and explore the relationship between them.

[Free Registration/Login may be required to access all resource tools.] Learn how to write equations of parallel lines.

Looks at parallel lines and intersecting lines (transversals), and the angles they form. [7:08]

Explains angles and parallel lines through examples and a video lesson.

Learn about parallel lines, transversals, and the angles they form.

Angles of parallel lines examples.