Compute a given property of a triangle.

Input parameters:

1. Tr → Triangle to measure.
2. Pr → Property to measure.
   •  10 → Vertex A
   •  11 → Vertex B
   •  12 → Vertex C
   •  20 → Edge AB
   •  21 → Edge BC
   •  22 → Edge CA
   •  23 → Edge Shortest
   •  24 → Edge Longest
   •  30 → Middle AB
   •  31 → Middle BC
   •  32 → Middle CA
   •  40 → Angle A
   •  41 → Angle B
   •  42 → Angle C
   •  43 → Angle Smallest
   •  44 → Angle Largest
   •  50 → Altitude A
   •  51 → Altitude B
   •  52 → Altitude C
   •  60 → Median A
   •  61 → Median B
   •  62 → Median C
   •  70 → Bisector A
   •  71 → Bisector B
   •  72 → Bisector C
   •  80 → Perpendicular AB
   •  81 → Perpendicular BC
   •  82 → Perpendicular CA
   •  90 → Areacentre
   •  91 → Orthocentre
   •  92 → Incentre
   •  93 → Circumcentre
   • 100 → Area
   • 101 → Perimeter
   • 110 → Acute
   • 111 → Right
   • 112 → Obtuse
   • 113 → Scalene
   • 114 → Isosceles
   • 115 → Equilateral

Output parameters:

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