This formula is also known as the shoelace formula .
Is an easy way to solve for the area of a coordinate triangle by substituting the 3 points ( x , y ) , ( x , y ) , and ( x , y ) .
This formula is also known as the shoelace formula and is an easy way to solve for the area of a coordinate triangle by substituting the 3 points ( x , y ) , ( x , y ) , and ( x , y ) .