Explanation
a trapezoid as a quadrilateral having only one pair of parallel sides
the shapes in the image have one pair of paralle sides, so they are
Trapezoid
we can discard the other options by checking the defintios of each figure:
a)a four-sided plane rectilinear figure with opposite sides parallel
No, the figures dont have 4-opposite side
b)a quadrilateral all of whose sides have the same length
