The length of the hypotenuse is (the length of each leg) times (the square root of 2).
(5,7) is the answer to the question, you can also use (-1,-5)
When two lines cross, there are four angles at the place where they cross.
Two angles that do NOT share a side are vertical angles. There are two pairs
of vertical angles where the lines cross.
Also, by the way, vertical angles are always equal to each other. It's often
very helpful to know that.
