∠ONK=78/2 = 39°
∠x = ∠OKN = ∠ONK = 39°
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x² = 8²+8²-2*8*8*cos(60°) = 128-128*(1/2) = 64
x = 8
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x² = 32²+32²
x = 32√2
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x = (360-143-77)/2 = 70°
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x = 360-180-2*40 = 100°
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x = (360-180-124)/2 = 28°
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x = 360-200-25*2 = 110°
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x = (360-46-112)/2 = 101°