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Mathematics

Rhombus Diagonal Calculator

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Variable Legend

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.

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Mathematically verified
Reviewed June 2026
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