Equation practice with segment addition

The  exercise appears under the 7th Grade Math Mission. This exercise practices writing and solving equations in the context of the Segment Addition Postulate from geometry.

Types of Problems
There is one type of problem in this exercise:


 * 1) Use the diagram and information to solve the problem: This problem provides a diagram illustrating the Segment Addition Postulate, but with a variable. The student is asked to use the information to solve for the variable and use it to find a particular length.Epwsa1.png

Strategies
Knowledge of the Segment Addition Postulate and an ability to solve equations are the main skills needed to ensure success on this exercise.
 * 1) The Segment Addition Postulate says that on a segment AB, if C is between A and B, then AC+CB=AB.
 * 2) Make sure to answer what the question is asking for, finding x is not enough, it asks for one of the lengths.