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Home > CCG > Chapter 12 > Lesson 12.1.3 > Problem 12-46


Multiple Choice: In the diagram at right, the value of is:

  1. none of these

 Two parallel lines, the first 9 units long and the second 6 units long, have a line connecting the left endpoints and extending downward until it meets with the line where the right endpoints are connected and its line extended downward. This formed a triangle where on the right side the distance between the 2 parallel lines is, x, and the distance between the second parallel line and where the two endpoint lines meet is 4.

The diagram contains similar triangles. Use this fact to set up a proportion.

b. 2