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Perimeter = Side A + Side B + Side C + Side D. 4. Using Coordinates. If you have been given coordinates (x,y) for each corner point of a rectangle in a two-dimensional plane, finding its perimeter is ...

I'm learning Java by writing a Mandelbrot program. I can draw the image, then use the mouse to choose an area to magnify. Works great, except... When I choose the area to magnify (mouse down, move ...