Question

Is this a right triangle?

Answer 1

Answer:

yes

Step-by-step explanation:

Answer 2

Answer:

It's B.

Step-by-step explanation:

We need to see if AB is perpendicular to BC. If it is then the product of the slopes of BC and AB  will equal -1.

A is the point (-5,5), B is (-3,2) and C is (-6, 0).

Slope of AB = (5 - 2) / (-5 - -3) =  3 / -2 = -3/2.

Slope of BC = (2-0) / (-3 - (-6) = 2 / 3.

The product of their slopes  is -3/2 * 2/3 = -1.

Therefore triangle ABC is right-angled.