👉 Learn how to determine the figure given four points. A quadrilateral is a polygon with four sides. Some of the types of ...

👉 Learn how to find the area and perimeter of trapezoids. A trapezoid is a quadrilateral with one pair of parallel sides.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. What is a quadrilateral? A quadrilateral is a four-sided shape where each of the sides are straight and ...