The vertices of a triangle are at the points (-1,-2), (-1, 2) and (6,2). Is the triangle a right triangle? Explain why.

Answer 1

it helps to draw a graph or just a rough sketch plotting the 3 points

yes it's a right triangle

the top side is a flat horizontal line given the same y coordinates (-1,2) and (6,2)

the left side is a vertical line given the same x coordinates (-1,2,) and (-1,-2)

a vertical line and a horizontal line are perpendicular. Perpendicular lines intersect at a 90 degree or right angle.

It's a right triangle