Using angle measures and relationships to solve for variables

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Taught by mrbrianmclogan
  • Currently 3.0/5 Stars.
8850 views | 1 rating
Part of video series
Meets NCTM Standards:
Errors in this video:

At the end of the lesson, the final answer should be y = 26 1/3 OR 26.33333..., NOT 26.2

Lesson Description:

Solving for a variable in angle measure relationships. Vertical angles and supplementary angles are used in this example.

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Questions answered by this video:
  • What are vertical angles?
  • What does it mean for angles to be supplementary?
  • How do you solve for x in an angle relationship?
  • How do you find angle measures when you have two parallel lines cut by a transversal?
  • If angles with measures 4x and 8x - 12 are vertical angles, what does x equal?
  • If angles with measures 6y + 10 and 12 are supplementary angles, what does y equal?
  • Staff Review

    • Currently 3.0/5 Stars.
    This is a good lesson for learning how angle measures relate to each other, especially when you have two parallel lines cut by a transversal. In this lesson, you will learn how to use vertical angles and supplementary angles to solve for variables x and y, which are variables used to represent angle measures in this figure.