Math

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Which of the triangles described in the table is a right triangle.
Table
Triangle Q, Side 1=25 Side 2=10 Side 3=15.
Triangle R, Side 1=26 Side 2=20 Side 3=46.
Triangle S, Side 1=25 Side 2=20 Side 3=1,025.
Triangle T, Side 1=25 Side 2=26 Side 3=650.
A. Q
B. R
C. S
D. T

My answer is A

  • Math -

    Its not A, use Pythagorean theorem a² + b² = c² plug in those numbers in the formula to see if it is a right triangle.

  • Math -

    None of them do

    As a matter of fact, the last three don't even form triangles.
    the second forms a straight line, notice 20+26 = 46
    and the last two fail the basic property that in order to even have a triangle, the sum of any two must be greater than the third side.

    for the first one: 15^2 + 10^2 ≠ 25^2

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