Without using the Pythagoras theorem, show that the points (4,4),(3,5) and (−1,−1) are the vertices of a right-angled triangle.

Without using the Pythagoras theorem, show that the points (4,4),(3,5)

1.	Without using the Pythagoras theorem, show that the points (4,4),(3,5) and (−1,−1) are the vertices of a right-angled triangle.
Answer» Without using the Pythagoras theorem, show that the points $(4, 4), (3, 5) and (- 1, - 1)$ are the vertices of a right-angled triangle.