A triangle has sides with lengths of 60 meters, 79 meters, and 97 meters. Is it a right triangle?

1 answer

To determine if a triangle with sides of lengths 60 meters, 79 meters, and 97 meters is a right triangle, we can apply the Pythagorean theorem. The Pythagorean theorem states that for a triangle to be a right triangle, the square of the length of the longest side (the hypotenuse) must equal the sum of the squares of the other two sides.

  1. Identify the longest side:

    • The lengths of the sides are 60 m, 79 m, and 97 m. The longest side is 97 m.
  2. Apply the Pythagorean theorem:

    • Check if \( a^2 + b^2 = c^2 \) where \( c \) is the longest side.
    • Here, let \( a = 60 \) m, \( b = 79 \) m, and \( c = 97 \) m.
  3. Calculate:

    • \( a^2 = 60^2 = 3600 \)
    • \( b^2 = 79^2 = 6241 \)
    • \( c^2 = 97^2 = 9409 \)
  4. Now check if \( a^2 + b^2 = c^2 \):

    • \( 3600 + 6241 = 9841 \)
    • \( 9409 \neq 9841 \)

Since \( a^2 + b^2 \) does not equal \( c^2 \), the triangle with sides of lengths 60 meters, 79 meters, and 97 meters is not a right triangle.