Question

If the longest side of the triangle is 15 what can be said about the sum of its two shorter sides

Answer 1

Pythagorus theorem - a^2 + b^2 = c^2
c^2 is the hypotenuse which is the longest side so c^2=15.
So what you can say about the other sides is that a^2 + b^2 = 15. So each of the other sides squared added together equals the longest side which is 15