Texas Education Agency
Texas Gateway: Geometric Properties of Angle Relationships in Polygons
Given numerical and/or geometric patterns that represent geometric properties of angle relationships in polygons, the student will investigate patterns to make conjectures about interior and exterior angles of polygons.
McGraw Hill
Glencoe Mathematics: Online Study Tools: Line and Angle Relationships
This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of line and angle relationships.
Math Open Reference
Math Open Reference: Angles
Everything you wanted to know about angles and more, including 1) how to measure angles 2) types of angles 3) angle relationships and 4) angles around a transversal.
Other
Nearpod: Angle Relationships
In this lesson, 7th graders will learn angle relationships and use these relationships to solve problems.
Khan Academy
Khan Academy: Angle Relationships With Parallel Lines
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.
Texas Education Agency
Texas Gateway: Algebraic Expressions to Represent Angle Properties in Circles
Given numerical and/or geometric patterns that represent angle relationships in circles, the student will investigate inscribed angle relationships.
Texas Instruments
Texas Instruments: Exterior Angle and Side Angle Relationships
This activity will help students visualize the relationships that arise when some of the congruence conditions are true but one is not. The interactive nature of their constructions will permit them to explore these relationships in a...
Khan Academy
Khan Academy: Angle Relationships With Parallel Lines
Find missing angles given two parallel lines and a transversal.
ClassFlow
Class Flow: Angle Relationships
[Free Registration/Login Required] This flipchart explores angle relationships: supplementary and complimentary, vertical, etc.
Other
Nearpod: An Introduction to Angles
For this lesson, students will learn important definitions about angles relationships an use those facts to solve equations.
Texas Education Agency
Texas Gateway: Making and Verifying Conjectures About Angles
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.
Sophia Learning
Sophia: Sum of Angles in Polygons
This tutorial with video and slideshow components investigate the characteristics of polygons as well as how to calculate the interior and exterior angles of any polygon. It offers two PowerPoint presentations and two videos that feature...
CK-12 Foundation
Ck 12: Same Side Interior Angles
[Free Registration/Login Required] Students explore the concept of same side interior angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more...
CK-12 Foundation
Ck 12: Vertical Angles
[Free Registration/Login Required] Students explore the concept of vertical angles by navigating through the interactive learning module and then answering questions that go along with the module.
CK-12 Foundation
Ck 12: Corresponding Angles
[Free Registration/Login Required] Students explore the concept of corresponding angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about...
CK-12 Foundation
Ck 12: Corresponding Angles
[Free Registration/Login Required] Students explore the concept of corresponding angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about...
CK-12 Foundation
Ck 12: Alternate Interior Angles
[Free Registration/Login Required] Students explore the concept of alternate interior angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more...
CK-12 Foundation
Ck 12: Vertical Angles
[Free Registration/Login Required] Students explore the concept of vertical angles by navigating through the interactive learning module and then answering questions that go along with the module.
CK-12 Foundation
Ck 12: Complementary Angles
[Free Registration/Login Required] Students explore complementary angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the concept by...
CK-12 Foundation
Ck 12: Complementary Angles
[Free Registration/Login Required] Students explore complementary angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the concept by...
CK-12 Foundation
Ck 12: Supplementary Angles
[Free Registration/Login Required] Students explore supplementary angles by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about the concept by...
Texas Education Agency
Texas Gateway: Writing Geometric Relationships
Given information in a geometric context, students will be able to use informal arguments to establish facts about the angle sum and exterior angle of triangles, the angles created when parallel lines are cut by a transversal, and the...
Texas Education Agency
Texas Gateway: Making Conjectures About Circles and Angles
Given examples of circles and the lines that intersect them, the student will use explorations and concrete models to formulate and test conjectures about the properties of and relationships among the resulting angles.
CK-12 Foundation
Ck 12: Geometry: Triangle Relationships Study Guide
[Free Registration/Login may be required to access all resource tools.] This study guide reviews terminology for triangles, triangle properties, different types of triangles, and interior and exterior angle theorems.