Unit Plan
Texas Education Agency

Texas Gateway: Making and Verifying Conjectures About Angles

For Students 9th - 10th
Given the relationship(s) among a set of angles, the student investigates the patterns and makes conjectures about the geometric relationships, including angles formed by parallel lines cut by a transversal.
Unit Plan
Texas Education Agency

Texas Gateway: Making Conjectures About Parallel and Perpendicular Lines

For Students 9th - 10th Standards
The student will verify theorems about angles formed by parallel lines cut by a transversal and apply these relationships to solve problems.
Activity
Texas Instruments

Texas Instruments: Parallel Lines Cut by a Transversal With Cabri Jr.

For Teachers 9th - 10th
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.
Interactive
Government of Alberta

Learn Alberta: Math Interactives: Exploring Parallel Lines (Object Interactive)

For Students 6th - 8th Standards
Investigate vertically opposite, corresponding, and alternate angles formed by parallel lines and a transversal using this highly interactive Learn Alberta math. Be sure to follow the link to the printable activities, solutions, learning...
Handout
Math Open Reference

Math Open Reference: Parallel Lines

For Students 9th - 10th Standards
Get the definition for parallel lines and explore angles associated with parallel lines.
eBook
Math Planet

Math Planet: Geometry: Angles, Parallel Lines and Transversals

For Students 9th - 10th Standards
Angles, parallel lines, and transversals are explained through examples and a video lesson. [1:01]
Unknown Type
Khan Academy

Khan Academy: Angle Relationships With Parallel Lines

For Students 7th - 8th Standards
Find missing angles given two parallel lines and a transversal. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Unknown Type
Khan Academy

Khan Academy: Equation Practice With Angles

For Students 7th - 8th Standards
In this practice activity, students calculate angles created when two parallel lines are intersected by a transversal. Students receive immediate feedback and have the opportunity to watch a video, get hints, or try questions repeatedly.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Visually Evaluating Parallel Lines Cut by a Traversal

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems about parallel lines cut by a transversal.
Activity
Texas Instruments

Texas Instruments: Angles Formed by Parallel Lines and a Transversal

For Teachers 9th - 10th Standards
Students explore relationships in various angles formed by 2 parallel lines and a transversal.
Activity
Texas Instruments

Texas Instruments: Parallel Lines, Transversals and Angles

For Teachers 6th - 8th Standards
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...
Activity
Texas Instruments

Texas Instruments: Angles and Transversals

For Teachers 9th - 10th
Students explore the relationships of angles formed when two parallel or non-parallel lines are cut by a transversal. This activity investigates the terms: Transversal, corresponding angles, alternate interior angles, alternate exterior...
Activity
Texas Instruments

Texas Instruments: Parallel Lines Cut by a Transversal

For Teachers 9th - 10th
In this activity, students learn and increase their knowledge about the angles formed when parallel lines are cut by a transversal.
Activity
Texas Instruments

Texas Instruments: Angles Formed by Parallel Lines

For Teachers 9th - 10th Standards
Students can use Cabri Jr. to construct parallel lines and transversals. They will make conjectures about the angles that are formed.
Activity
Texas Instruments

Texas Instruments: Properties of Parallel Lines Cut by a Transversal

For Teachers 9th - 10th
In this activity, students create parallel lines and a transversal, and study the properties of the lines and their angles.
Activity
Analyze Math

Analyze Math: Parallel Lines and Angles Problems

For Students 9th - 10th
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.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Corresponding Angles

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This concept teaches students about corresponding angles, and how to use them to determine whether or not lines are parallel. Students examine guided notes, review...
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Corresponding Angles

For Students 7th - 9th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson students identify corresponding angles formed when a line intersects two other lines. Students examine guided notes, review guided practice, watch...
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Corresponding Angles

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] In this lesson students identify corresponding angles formed when a line intersects two other lines. Students examine guided notes, review guided practice, watch...
Handout
Sonoma State University

Sonoma State University: Parallel Lines and Similar and Congruent Triangles

For Students 9th - 10th Standards
This site defines parallel lines, parallel lines cut by a transverse, and congruent triangles. It also contains links for related terms.
Whiteboard
ClassFlow

Class Flow: Parallel Lines and Planes

For Teachers 9th - 10th Standards
[Free Registration/Login Required] This flipchart defines parallel lines and planes. It defines a transversal, the concept of alternate angles, and vertical angles.
Whiteboard
ClassFlow

Class Flow: Parallel Lines and Angles

For Teachers 9th - 10th Standards
[Free Registration/Login Required] This flipchart regards parallel lines and relationship of angles created by a transversal. Includes lesson on vocabulary, Jeopardy-style game, and quiz.
Activity
Texas Instruments

Texas Instruments: Parallel Lines

For Teachers 9th - 10th
This file contains questions related to parallel lines cut by a transversal and the angles formed. The questions can be used to asses your students' understanding of this topic in geometry.
Whiteboard
ClassFlow

Class Flow: Parallel Lines

For Teachers 6th - 8th Standards
[Free Registration/Login Required] This flipchart gives information and examples of the relationships of angles when parallel lines are cut by a transversal.