Calculate area, perimeter and angles of a rhombus from its side and diagonals.
A rhombus has four equal sides with diagonals that bisect each other at right angles. Area = ½ × d₁ × d₂. Each side = √((d₁/2)² + (d₂/2)²).
Area
A = (d₁ × d₂) / 2
Side
s = √((d₁/2)² + (d₂/2)²)
Yes — a square is a rhombus where both diagonals are equal.
Yes — each diagonal bisects a pair of opposite vertex angles.