4.26

Your inaccuracy by category:

Parallelogram 7.1 4.2 3.2
Midpoint 4.5 7.3 5.1
Bisect angle 1.1 1.3 0.5
Triangle center 3.4 3.6 10.3
Circle center 10.4 1.4 6.3
Right angle 5.6 0.1 0.0
Convergence 4.0 7.3 2.8

Average error: 4.26 (lower is better)
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Matt