General Quadrilateral Formulas

Sir SagarJanuary 10, 2015January 10, 20150

General Quadrilateral Formulas

Sides of a quadrilateral: a, b, c,d
Diagonals: $d_{1}, d_{2}$
Angle between the diagonals: $\varphi$
Internal angle: $\alpha, \beta, \gamma, \delta$
Perimeter: L
Area: S

1. $\alpha +\beta+ \gamma+ \delta =360^{\circ}$
2. L = a + b + c + d
3. S = $\frac{1}{2}d_{1}d_{2} sin\varphi$

General Quadrilateral Formulas

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