What is a kite in geometry?

A kite is a quadrilateral that has two pairs of consecutive sides that are equal in length. The two pairs share no sides — one pair meets at the top vertex and the other pair meets at the bottom vertex.

What is the formula for the perimeter of a kite?

P = 2(a + b), where a is the length of one pair of equal sides and b is the length of the other pair. Since each value appears twice, you multiply their sum by 2.

Does the unit matter?

No — use any consistent unit (cm, m, inches, feet, etc.). The perimeter will be expressed in the same unit as your input.

What happens when a equals b?

When both side pairs are equal, the kite becomes a rhombus, and the perimeter simplifies to P = 4a.

Can a kite have a pair of equal opposite angles?

Yes. A kite always has one pair of equal opposite angles — the angles between the unequal sides. This is a standard geometric property of kites.

Is a square a special kite?

Yes. A square is both a rhombus and a kite where a = b and all angles are 90 degrees.

Perimeter of a Kite Calculator

Enter the two distinct side lengths of a kite and instantly compute its perimeter using P = 2(a + b).

Input

Enter both pairs of side lengths. Each pair appears twice in the kite.

Side pair a (two equal sides)

Side pair b (two equal sides)

Formula

P = 2(a + b)

where a and b are the two distinct side lengths.

Result

Enter side lengths and click Calculate.

Summary

A kite is a quadrilateral with two pairs of consecutive equal sides. Given side pair a and side pair b, its perimeter is P = 2(a + b). This calculator accepts both side values and returns the exact perimeter with a clear step-by-step breakdown. Results are shown to four decimal places.

How it works

Enter the length of the first pair of equal sides (a).
Enter the length of the second pair of equal sides (b).
Click Calculate to apply the formula P = 2(a + b).
The result panel shows the perimeter and the full working steps.
Click Reset to clear all fields and start over.

Use cases

Geometry homework involving kite-shaped quadrilaterals.
Verifying manual perimeter calculations for kites.
Architecture and design projects using kite-shaped panels or tiles.
Fabric cutting and crafts that use kite-shaped patterns.
Teaching the relationship between side pairs and perimeter.
Quick reference for standardized test preparation.

Frequently Asked Questions

Last updated: 2026-05-25 · Reviewed by Nham Vu