Euclidean geometry is the mathematical technique that are discovered by the Greek mathematician Euclid of the Alexandria .In the In the 19th century fifth postulate of the euclidean geometry are created.
The Euclid approach is to presume the limited number of the influential theoretical axioms as well as to conclude several other proposals.
The main objective of fifth postulate of euclidean geometry is to implement the properties of geometry like points ,etc without the use of coordinate geometry .
check the image attached, the y coordinate of his school and house are the same that is, -2 so all we have to do is check the distance between x coordinates
that is , -7 and 3
distance between school and his house = 3 - (-7) = 10 blocks