Compute a given property of a rectangle.

Input parameters:

1. Rc → Rectangle to measure.
2. Pr → Property to measure.
   •  10 → Vertex A
   •  11 → Vertex B
   •  12 → Vertex C
   •  13 → Vertex D
   •  20 → Edge AB
   •  21 → Edge BC
   •  22 → Edge CD
   •  23 → Edge DA
   •  30 → Middle AB
   •  31 → Middle BC
   •  32 → Middle CD
   •  33 → Middle DA
   •  40 → Diagonal AC
   •  41 → Diagonal BD
   •  50 → Median Vertical
   •  51 → Median Horizontal
   •  60 → Width
   •  61 → Height
   •  62 → X Domain
   •  63 → Y Domain
   •  90 → Centre
   •  91 → Origin
   •  92 → Normal
   •  93 → Plane
   • 100 → Area
   • 101 → Perimeter
   • 102 → Ratio

Output parameters:

1. Pr → Requested rectangle property. A boolean, a number, a point, a line, etc., according to the type of the requested property.