Online rhombus properties calculator. Enter the two diagonals to find the area (half the product of the diagonals) and learn they bisect at right angles—ideal for geometry.
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All sides equal, diagonals perpendicular; area=d1×d2/2
One diagonal
The other
📖 Tutorial | Rhombus
1. Definition
A rhombus is a parallelogram with all sides equal.
2. Formula & Notation
d1, d2
Diagonals
S
Area, d1·d2/2
3. Properties & Laws
Equal sides;
Perpendicular, bisecting diagonals;
Diagonals bisect angles;
Area=product/2.
4. Steps
Enter diagonals d1, d2;
Click "Calculate";
Or click "Load Example".
5. Worked Examples
Example: diagonals 10 and 8. Solution: area = 40.
6. Common Pitfalls
Perpendicular but generally unequal; Divide by 2; Also base×height.