Two diagonals
Diagonal p + Diagonal q
A = pq/2; a = √(p²+q²)/2
Open calculator ↗GEOMETRY, ONE FIGURE AT A TIMERhombus.
Rhombus.
Understand every measure.
Explore a diamond beyond its outline. Four free tools, clear formulas and a little discovery along the way.
Find your calculator ↗FIGURE 082D / REFERENCE DRAWING
RHOMBUSNOT TO SCALE
THE CALCULATOR DESK
Start with what you know.
4 calculators available
Side and interior angle
Side a + Interior angle θ
A = a² sin θ; P = 4a
Open calculator ↗Side and height
Side a + Perpendicular height h
A = ah; θ = arcsin(h/a)
Open calculator ↗Area and interior angle
Area A + Interior angle θ
a = √(A/sin θ)
Open calculator ↗MEET THE FIGURE
A rhombus, explained.
A rhombus is a quadrilateral with four equal sides. Its opposite sides are parallel, making it a special parallelogram. A square is a rhombus with right angles.
Understand the properties ↗LOOK A LITTLE CLOSER
More than a formula.
The diagonals divide a rhombus into four congruent right triangles.
Perpendicular height is at most a side length. Diagonals need not have equal lengths.
Explore three geometry facts ↗These tools use ideal Euclidean geometry. Every input must use the same unit. Numerical results are rounded and do not replace measurement, specialist design or safety checks. See worked examples.