Angles Part 3

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
5038 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson on angles, Julie Harland defines vertical angles and demonstrates how to solve problems that involve finding the measures of angles. She works through three problems, showing how to use the properties of intersecting lines and adjacent angles to determine the angles' measures. By the end of the lesson, viewers will have a solid understanding of how to find angle measures and how to apply the concepts of vertical angles and supplementary angles to solve more complex problems. Visit Julie's website,, for more math videos organized by topic.

Lesson Description:

Problems with angles are done on this video. Vertical angles defined.

More free YouTube videos by Julie Harland are organized at

Questions answered by this video:
  • What are vertical angles?
  • If 4x, 3x, 2x, and x all add up to 360 degrees, what does each angle equal?
  • If x and 112 degrees are supplementary, what does x equal?
  • If 3x and 5x - 22 are vertical angles, what does x equal and what does each angle equal?
  • Why are vertical angles equal?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson goes through 3 different problems, which are similar to the problems from the previous lessons in this series, but they are a little more complicated in this lesson. Vertical angles are also used and explained in this lesson.