Virtual Nerd
Virtual Nerd: What Are Vertical Angles?
Vertical angles are always congruent to one another. Take a look at this tutorial to learn about and see how to identify vertical angles. [4:07]
Virtual Nerd
Virtual Nerd: What Is a Transversal?
This tutorial introduces transversals and shows what happens when a transversal meets two parallel lines. [6 :22]
Sophia Learning
Sophia: Identifying Parallel, Intersecting, and Identical Lines
This video lesson demonstrates how to determine if linear equations are parallel, identical, or intersecting. Students can check their understanding with an assessment.
Sophia Learning
Sophia: Interpreting Slope
This video lesson demonstrates how to interpret the slope of linear equations to determine if lines are parallel or perpendicular. Students can check their understanding with an assessment.
Sophia Learning
Sophia: Vertical Angles Tutorial
Assess your understanding of vertical angles and whether they are congruent after viewing this video lesson [3:54]
Study Pug
Study Pug: Perpendicular Line Proofs
Video lesson explains angles, lines, and transversals. [9:33]
PBS
Pbs: Measurement and Geometry: Angles: Vertical and Congruent
Vertical angles lie diagonally opposite one another at an intersection and are always equal in measure. This makes them congruent.
Sophia Learning
Sophia: Finding the Graphical Solution to Three Equations: Lesson 2
The process of finding the solution for three equations by using a graph is demonstrated in this lesson. It is 2 of 10 in the series titled "Finding the Graphical Solution to Three Equations."
Sophia Learning
Sophia: Finding the Graphical Solution to Three Equations: Lesson 3
The process of finding the solution for three equations by using a graph is demonstrated in this lesson. It is 3 of 10 in the series titled "Finding the Graphical Solution to Three Equations."
Sophia Learning
Sophia: Finding the Graphical Solution to Three Equations: Lesson 7
The process of finding the solution for three equations by using a graph is demonstrated in this lesson. It is 7 of 10 in the series titled "Finding the Graphical Solution to Three Equations."
Sophia Learning
Sophia: Finding the Graphical Solution to Three Equations: Lesson 9
The process of finding the solution for three equations by using a graph is demonstrated in this lesson. It is 9 of 10 in the series titled "Finding the Graphical Solution to Three Equations."
Sophia Learning
Sophia: Finding the Graphical Solution to Three Equations: Lesson 1
The process of finding the solution for three equations by using a graph is demonstrated in this lesson. It is 1 of 10 in the series titled "Finding the Graphical Solution to Three Equations."
Sophia Learning
Sophia: Two Intersecting Lines: Lesson 3
This lesson will explain that where two distinct, nonparallel lines intersect, four angles are created that sum to 360 degrees. It is 3 of 7 in the series titled "Two Intersecting Lines."
Sophia Learning
Sophia: Two Intersecting Lines: Lesson 6
This lesson will explain that where two distinct, nonparallel lines intersect, four angles are created that sum to 360 degrees. It is 6 of 7 in the series titled "Two Intersecting Lines."
Sophia Learning
Sophia: Drawing Line Relationships: Lesson 2
This lesson will demonstrate how to draw intersecting, perpendicular, and parallel lines.
Sophia Learning
Sophia: Finding the Graphical Solution for Two Equations
This lesson will review how to solve for a linear system of equations by graphing.
Sophia Learning
Sophia: Two Intersecting Lines: Lesson 4
This lesson will explain that where two distinct, nonparallel lines intersect, four angles are created that sum to 360 degrees. It is 4 of 7 in the series titled "Two Intersecting Lines."