Try It

How many questions can you answer correctly?

  1. If C is between A and B, then AC + _______ = AB.

    Answer: CB

  2. If RS + ST = RT, then S is _____ R and T.

    Answer: between

  3. If TV + VU = TU, then ________ is between T and U.

    Answer: V

  4.  For point B to be between points A and C, all three points must be _______ and lie on segment AC.

    Answer: collinear

  5. True or False: If point B is between points A and C, B is the middle of segment AC.

    Answer: False

  6. The measure of distance is always ______.

    Answer: positive

Answer the following questions.

Questions 1 - 5 are based on this number line.

  1. What is the length of AB?
    1. -5
    2. 5
    3. 10
    4. -15

    Answer: b. 5

  2. What is the length of EG?
    1. 5
    2. -1
    3. 1
    4. 6

    Answer: a. 5

  3. What is the length of FB?
    1. 9
    2. -9
    3. 4.5
    4. 3.5

    Answer: c. 4.5

  4. What is the length of DC?
    1. 3.5
    2. 3
    3. 8
    4. 4

    Answer: b. 3

  5. What is the length of BG?
    1. 3
    2. -3
    3. 6
    4. 2.5

    Answer: Ca. 3

    6. Questions 6 - 8 are based on the graph shown here.

    graph with three points: A (-3, 2), B (4, 2) and C(0, -1)

  6. Use the graph to find the distance between the points. Use the distance formula to calculate the value to the nearest tenths. Find BC.
    1. 25
    2. 4.1
    3. 7
    4. 5

    Answer: d. 5

  7. Use the graph to find the distance between the points and the distance formula to calculate the value to the nearest tenths. Find AC.
    1. 4.2
    2. 9
    3. 3
    4. 3.2

    Answer: a. 4.2

  8. Use the graph to find the distance between the points and the distance formula to calculate the value to the nearest tenths. Find AB.
    1. 7
    2. 1
    3. 2.2
    4. 7.3

    Answer: a. 7

If you missed more than one or two, review the questions again.

Practice #1

Find the distance between the two points. Write the final answer in simplified form. (−6, −6) and (−3, −3)

  1. 2 the square root of 45
  2. 9 the square root of 10
  3. 3 the square root of 2

Answer: c. 3 the square root of 2

Practice #2

Find the distance between the two points. Write the final answer in simplified form. (3,8) and (9,10)

  1. 2 the square root of 10
  2. 4 the square root of 10
  3. 4 the square root of 5

Answer: a. 2 the square root of 10

Practice #3

Find the distance between the two points. Write the final answer in simplified form. (−3,2) and (3,5)

  1. 3 the square root of 15
  2. 3 the square root of 5
  3. 5 the square root of 9

Answer: b. 3 the square root of 5

Practice #4

Find the distance between the two points. Write the final answer in simplified form. (10,1) and (9,−4)

  1. 2 the square root of 13
  2. the square root of 26
  3. 2 the square root of 6

Answer: b. the square root of 26

Practice #5

Find the distance between the two points. Write the final answer in simplified form. (1,5) and (2,−2)

  1. the square root of 10
  2. 5 the square root of 2
  3. the square root of 15

Answer: b. 5 the square root of 2