In a right triangle the square of the longest side is equal to the sum of the squares of the other sides.
a)
\(2^2+5^2=10^2 \\
4+25=100 \\
29=100 \\\)
not true
it isn't a right triangle
b)
\(6^2+9^2=12^2 \\
36+81=144 \\
117=144\)
not true
it isn't a right triangle
c)
\(4^2+7^2=10^2 \\
16+49=100 \\
65=100\)
not true
it isn't a right triangle
d)
\(6^2+8^2=10^2 \\
36+64=100 \\
100=100\)
true
it is a right triangle
The answer is D.
