Question

show that the numbers 8 15 and 17 can form the sides of a right angled triangle

Answer 1

For triangle
sum of two sides should greater then third side and difference of any two sides should be less than third side
$8 + 15 > 17 \\ 23 > 17 \\ \\ \\ 15 - 8 = 7 \\ 7 < 17$
so it is satisfying both the condition so it will form the traingle