A triangle has lengths 4,7,9 Is it a right triangle why or why not?

No

Step-by-step explanation:

4,7,9 is not a right angle triangle. If it was a right angle triangle then it show work in the formula a^2+b^2=c^2. But 4^2+7^2 doesn't equal 9^2. The hypotenuse or c should be 8.02 to be a right angle triangle.

No is the answer to this question because a triangle can't have have 4,7,9 length