Question

One triangle on a graph has a vertical side of 7 and a horizontal side of 12.

Answer 1

If you are working out the diagonal line you need to use Pythagoras Theroum: c² = a²+b²

c² = 7²+12² = 193
√c² = c = √193 = 13.89

The length of the diagonal side is 13.89,
Hope this helps! :)