Creating Equation Now that we've done the work to find the area of the three previous shapes, let's see if we can come up with a general equation for the area of these types of shapes. So using the same method you've used in the last 3 problems see if you can put all of the equations together into one. You'll need to use: An equation for the area of a triangle An equation for the height of the triangle The Sin Law or Cos Law for the side length of one of the triangle And finally an equation to add up the areas of all of the triangles This equation should include "n", number of sides of the polygon, and "I". the length of each side