Answer:
Compare the slopes of BC and AD and of AB and DC
Step-by-step explanation:
A trapezoid is a quadrilateral, so it must have four sides and angles . It has at least one pair of parallel sides and it has no perpendicular sides or right angles. So the best way to determine if your shape is a trapizoid is to find if it has one pair of parallel lines. You can find if there are two parallel lines by comparing slopes of opposite lines, which can be done by inputing the change in y over change in x. It will look something this [tex]\frac{y}{x}[/tex] with the difference between the y points being compared on top and the difference between x points on bottom.
