In Euclidean geometry, a kite is a quadrilateral whose four sides can be grouped into two pairs of equal-length sides that are adjacent to each other. In contrast, a parallelogram also has two pairs of equal-length sides, but they are opposite to each other rather than adjacent.

Sides of a kite: a,b

Diagonal: d

_{1},d

_{2}

Angles: α,β,γ

Perimeter: L

Area: S

- $α+β+2γ=360°$
- $L=2(a+b)°$
- $S={d_1d_2}/2$

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