1.   Which formula represents the Pythagorean Theorem?
   
    A. c2 = a2 + b2 B. a + b = c
    C. c2 = a2 - b2 D. a2 = b2 + b2
    Hint

  2.   Given the lengths of the sides of a triangle, which of the following is not a right triangle?
    A. 10, 12, 15 B. 5, 12, 13
    C. 3, 4, 5 D. 6, 8, 10
    Hint

  3.   A 12-ft ladder is placed 5 feet from a building. Approximately how high does the ladder reach?
    A. 13 ft B. 8 ft
    C. 10 ft D. 11 ft
    Hint

  4.   The following are lengths of sides of various triangles. Which one is a right triangle?
    A. 8, 9, 10 B. 18, 24, 30
    C. 5, 19, 25 D. 3, 4, 7
    Hint

  5.   The following are lengths of sides of various triangles. Which one is not a right triangle?
    A. 7, 24, 25 B. 9, 12, 15
    C. 5, 12, 13 D. none of the others
    Hint



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