Question

The perimeter of the triangle formed by the vertices (0, 0), (2, 0) and (0, 2) is :

Using distance formula, show that the points (–1, 3), (6, 2) and (3, –1) are vertices of a right-angled triangle.

If A(4, 3), B(-1, y) and C(3, 4) are the vertices of a right triangle ABC, right-angled at A, then find the value of y.

Show that the points (− 2, 3), (8, 3) and (6, 7) are the vertices of a right-angled triangle.