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4-86.

This problem is a checkpoint for solving proportions and similar figures. It will be referred to as Checkpoint 4.

  1. A triangle with a parallel line drawn inside to create a smaller internal triangle. The internal triangle has side lengths of x, 4, and 3. The parallel segments are the bases for both triangles. The internal base is, 4, the outer triangle base is, 12. Another side for the outer triangle is 8 + x which includes the, x, side from the smaller internal triangle.Sam grew inches in months. If he continues at the same rate, how much will he grow in one year?

  2. Use the figure at right to solve for .

Check your answers by referring to the Checkpoint 4 materials located at the back of your book.

Ideally, at this point you are comfortable working with these types of problems and can solve them correctly. If you feel that you need more confidence when solving these types of problems, then review the Checkpoint 4 materials and try the practice problems provided. From this point on, you will be expected to do problems like these correctly and with confidence.

Answers and extra practice are located in the back of your printed textbook or in the Reference Tab of your eBook. If you have an eBook, login and then click the following link: Checkpoint 4: Solving Proportions and Similar Figures