Which lengths would form a right triangle? 9, 12, and 14 24, 7, and 26 21, 16, and 12 30, 24, and 18

The pythagorean theorem can be used only on right triangles ... so, when subbed into the pythagorean theorem a^2 + b^2 = c^2, if it makes this equation true, then it is a right triangle

a^2 + b^2 = c^2 ... where a and b are the legs and c is the hypotenuse (the longest side) ... subbing in : a = 18, b = 24 and c = 30

18^2 + 24^2 = 30^2

324 + 576 = 900

900 = 900 (correct)

so ur answer is : 18,24, and 30 form a right triangle