Math Subject for High School - 10th Grade: Quadrilaterals

It has four sides, four vertices and four angles, which add up to 360º. A square is correct. A rectangle too. And a trapezoid. Any quadrilateral is the correct answer to that definition. Now, as a teacher, you can download this template and prepare a lesson on math. How about finding out the median of any given quadrilateral? And how to calculate its area? To talk about geometry, nothing better than a geometric template and backgrounds with grids.