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Practice Activity

  1. Find the missing side length of the right triangle. Simplify your answer.
    A right triangle. The length of the hypotenuse is x units. The length of one leg is 10 units. The length of the other leg is 20 units.
    1. 10 times square root of 5
    2. 5 times square root of 10
    3. 25 times square root of 5
    4. 5 times square root of 2

    Answer: a. 10 times square root of 5

  2. Find the missing side length of the right triangle. Round your answer to the nearest tenth.
    A right triangle. The length of the hypotenuse is x units. The length of one leg is 4 units. The length of the other leg is 5 units.
    1. 8.5
    2. 6.4
    3. 7.9
    4. 5.3

    Answer: b. 6.4

  3. Find the missing side length of the right triangle. Round your answer to the nearest tenth.
    A right triangle. The length of the hypotenuse is 14 units. The length of one leg is x units. The length of the other leg is 8 units.
    1. 12.6
    2. 6.7
    3. 22
    4. 11.5

    Answer: d. 11.5

  4. Find the missing side length of the right triangle. Simplify your answer.
    A right triangle. The length of the hypotenuse is 12 units. The length of one leg is x units. The length of the other leg is 10 units.
    1. 2 times square root of 3
    2. 11 times square root of 2
    3. 2 times square root of 11
    4. 4 times square root of 11

    Answer: c. 2 times square root of 11

  5. Find the missing side length of the right triangle. Round your answer to the nearest tenth.
    A right triangle. The length of the hypotenuse is 16 units. The length of one leg is 5 units. The length of the other leg is x units.
    1. 14.3
    2. 11.1
    3. 23.4
    4. 15.2

    Answer: d. 15.2

  6. The sides of a triangle are 5, 12 and 13. Is it a right triangle?
    1. Yes
    2. No

    Answer: a. Yes