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ADF = Shaded Area = 1

[ABCDEF] / [1-1-1-Triangle] = 13

[ Blue Quadrilateral ] = 100

New / Elaborated

[ Green Triangle ] = 27 / 8 = 3.375

Green Area = 1.34378733978

X = CE = 15

X = ABC = 75 ( AC = BC = C1 )

[ Shaded Triangle ] = 9

X = CBL = 33

[ Red ] / [ Yellow ] = 2

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Pink Circle Area = 6.28318530718

X = AB = 13

X = BD = 20

R = 16. R1 = 9

X = ACD = 105

R / R1 = 3.51776695297

Triangle Hypotenuse = (1 + sqrt 5) k

X = FEG = 48

Angle EAF = 15

Green Area = 84 / 25 = 3.36

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Pink Triangle Area = 10

Angle EDF = 90

Simplified / Improved

[ ABC ] = 24

X = BM = 5

Red Area = [ AEO ] = 42 / 25

Square Side s = 16

[ ABC ] = 39

Shaded Square Area = 15

Circle Radius R2 = 2

Shaded Area = 6.28318530718

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X = Line Segment DE = 5

X = BC = 12

Square DEFG Area = 64

Green Area = 12.5 = 25 / 2

X = ∠ B'OO' = 55

X = BAC = 15

DF / CF = 0.366025403784

Circle Area = 28.2743338823

X = ABD = 65

X = PQ = 11

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Green Semicircle

Red Square Area = 32

[ ABC ] = 6 = 1.2

[ CDFE ] = 2

Circle in Right Triangle

[ CDE ] = 7.50555349947

X = BAE = 66

X = BD = 5.7735026919

R₁ = 0.7071067 & R = 1.4142135

X = AG = 2.82842712475