Find - the length of the segment going from (-5,0) to (0,-5) - and the length of the segment from (-20,-15) to (-15,-20).
These are the length and width of the rectangle; multiply both quantities.
The width is found with the formula: [tex]\sqrt{x_1 - x_2)^2 + (y_1 - y_2)^2} = \sqrt{((-15) - (-20))^2 + ((-20) - (-15))^2}[/tex] The length is [tex]\sqrt{x_1 - x_2)^2 + (y_1 - y_2)^2} = \sqrt{((-15)-(0))^2+((-20)-(-5))^2}[/tex]
