2x 2y 8

2x 2y 8

Input interpretation
triangle | edge lengths 2×2 | 2 y | 2×8
Properties
area | sqrt(-y^4 + 136 y^2 – 3600)
perimeter | 2 (y + 10)
interior angles | ((180 cos^(-1)((y^2 + 60)/(16 y)))/pi° | (180 cos^(-1)(17/8 – y^2/32))/pi° | (180 cos^(-1)(y/4 – 15/y))/pi°)~~(cos^(-1)((0.0625 (y^2 + 60))/y) radians | cos^(-1)(2.125 – 0.03125 y^2) radians | cos^(-1)(0.25 y – 15/y) radians)
interior angle sum | 180° = pi rad~~3.142 rad

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