MathematicsWhich of the following sides are not of a right angled triangle ( in cm)

Which of the following sides are not of a right angled triangle ( in cm)

A
9, 15, 12
B
9, 5, 7
C
400, 300, 500
D
$2, \sqrt{5}, 1$

Solution:

9 5 7

$9^{2} \neq 5^{2} + 7^{2}$

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