Answer:
False.
Explanation:
To see if these sides can form a right triangle, all we need to do is see if the following equation holds
where
is the larger measurement.
it doesn't really matter which you assign as 5 or 8.
So I'm choosing the following
.
has to be 12 because 12 is the largest.
Now we got to see if
holds.
That is, we need to see if
holds.


That's totally false. 89 is definitely not 144 so 5,8, and 12 cannot be put together to form a right triangle.