Question

What polygon is formed by

joining the points
(1, −1), (4, −1), (−1, −3),
and (7, −3)?

Answer 1

the polygon is a trapezoid

Explanation:

(1, −1), (4, −1), the two points having the same y coordinate they make a horizontal line

(−1, −3), (7, −3) the two points having the same y coordinate they make another horizontal line

All horizontal lines are parallel.

The shape is a trapezoid because it has one pair of parallel lines.