Are the following points P (1, 3), Q (3, –1), R (–5, –5) are the vertices of a right angled triangle.

Are the following points P (1, 3), Q (3, –1), R (–5, –5) are the

1.	Are the following points P (1, 3), Q (3, –1), R (–5, –5) are the vertices of a right angled triangle.
Answer» Are the following points P (1, 3), Q (3, –1), R (–5, –5) are the vertices of a right angled triangle.