Can side lengths 2, 3, and 4 form a right triangle?
Note
Check the two smaller sides against the largest side. 2² + 3² = 4 + 9, but 4² = 16; they are not equal, so this is not a right triangle.
Can side lengths 2, 3, and 4 form a right triangle?
Check the two smaller sides against the largest side. 2² + 3² = 4 + 9, but 4² = 16; they are not equal, so this is not a right triangle.