Finding the Value of x using Alternate Interior Angles

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Taught by mrbrianmclogan
  • Currently 4.0/5 Stars.
6208 views | 1 rating
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Lesson Summary:

In this lesson, students will learn how to find the value of x using alternate interior angles. To start, parallel lines and a transversal line are needed. The angles on alternating sides of the transversal are called alternating interior angles, which are equal to each other. By setting two x minus fifteen equal to x plus fifty-five, the value of x can be found. In this specific problem, the value of x is seventy. Finally, this value can be used to find the values of the two angles, which are both equal to one hundred and twenty-five degrees.

Lesson Description:

Finding the value of x using alternate interior angles

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Questions answered by this video:
  • What is a transversal?
  • What are alternate interior angles?
  • If I have 2 alternate interior angles with measures of 2x-15 degrees and x+55 degrees, then how do I solve for x and find the angle measures?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson explains what alternate interior angles are and what their relationship with one another is. It also shows how to solve for x when you are given the angle measurements of alternate interior angles in terms of x, and it shows how to find the measurement of the angles.