Question

prove that the points (- 6, 2), (1, 7) and (6, 3) are the vertices of scalene triangle.

Answer 1

Answer:

If we label them A(13,-2) B(9-8) and C(5-2)

The distance between A and B:

13

⇒

9

=

4

−

2

⇒

−

8

=

6

4

2

+

6

2

=

52

so the distance is

√

52

The distance between B and C:

9

⇒

5

=

4

−

8

⇒

−

2

=

6

4

2

+

6

2

=

52

the distance is

√

52

The distance between A and C is 8 as they are both on -2 for

y