If you were to go perpendicularly straight down you get to this side thats going to be thats going to be our height. In geometry a quadrilateral is a four-sided polygon having four edges sides and four corners vertices. Parallelogram Area Math Projects Math Journals Sixth Grade Math The word is derived from the Latin words quadri a variant of four and latus meaning sideAnother name for it is tetragon derived from greek tetra meaning four and gon meaning corner or angle in analogy to eg pentagon. . You should get a table that looks like the leftmost gray box in the figure above. The above diagram shows how to do this manually. Add the starting vertex again at the end. The perimeter of a rhombus is equal to P 4a where a is the length of each side. So in a situation like this when you have a parallelogram you know its base and its height what do we think its area is going to be. The perimeter of a parallelogram is equal to gi...