変数の説明
a= side lengthd₁= diagonal 1d₂= diagonal 2θ= interior angle
Diagonals from side and angle
Diagonals bisect the vertex angles.
d₁
d₂
Side from diagonals
Pythagoras on the half-diagonals.
Area from diagonals
Half product of diagonals.
Calculates rhombus properties including diagonals, area, perimeter, and angles.
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