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Home > CCG > Chapter 12 > Lesson 12.1.2 > Problem 12-26

12-26.

For each relationship below, write and solve an equation for . Justify your method.

  1. Two intersecting lines with vertical angles, 4, x, minus 2 degrees and 2, x, plus 9 degrees.

    How are these angles related?



  1. A quadrilateral with the following angles going clockwise, 116 degrees, 3,x, plus 8 degrees, 32 degrees, and 2, x minus 1 degree.

    What is the sum of the angles in a quadrilateral?

  1. Two vertical parallel lines with a transversal. About the intersection of the left parallel line and the transversal is the exterior, lower angle, 7, x minus 3 degrees. About the intersection of the right parallel line and the transversal is the exterior, lower angle, 4, x, plus 12 degrees.

    How are these angles related?