Top 10.397

XY = 12

ABCD / Red Area = 2

|BH| ² + |HN| ² + |EN| ² = 36

Blue Area = 50 Square Units

X, Y and Z

Blue Max = 3.14159265359

Now with Animation

Proof that 2 ABE = ADC

X = BFE = 30°

Yellow / Total = 1 / 19

Blue Area = 42.6776695297