Top 10.939

R1 = 0.486098816301

X = AC = 2

Top 10.938

X = ACM = 21

X = CAD = 15

Red Area - Yellow Area = 24

𝛼 = DAE = β = DBE = 30

Circle in Semicircle ( Elaborated )

tangent of θ = LM / BL = 1 / 3

X = AG = 21 / 4 = 5.25

Y / X = 1.74897690899

X = 135 / 2 = 67.5

Yellow Area = 13.8461538462

Top 10.937

BE / AE = 3

Tangent FG = 18

X = E2 = 12

X = BFC = 102

Yellow Area = 11.1535659519

Green Rectangle Area

Pink Area = 18

X = AFB = 20

Radius R = 65 / 8 = 8.125

Orange Area = 33.5800819504

Top 10.936

Shaded Area = 3 Square Units

Angle CBD = 45

X = DE = 7.24264068712

Pink Triangle Area = 12

X = ABD = 105

Red Semicircle Area = 27

Angle BAF = 30

X = DH = 4

Green Area = 3 / 10

Proof that a = b

Top 10.935

X = AB = 2R = 5

X = DF = 4

Blue Area = 864 / 5 = 172.8

Missing Angle BIF = 90

X = BE = BG = 2.07055236082

X = BAD = 45

Proof that a = b = c

Orange Area = 24.3600700663

Blue Area ≤ 70 / 3

a / b = 1.61803398875

Top 10.934

X = AFD = 72

Proof that Radius Formula is OK

X / Y = 1.61803398875

X / Y = 1.61803398875

Angle CED = 70

X = BCE = 15

Proof that AE = AB

AD = 8.48528137424

X = ACB =105

Area ( ABCD ) = 10.3923048454