Rhombus Formulas

Sir SagarJanuary 10, 2015January 10, 20150

Rhombus Formulas:

Side of a rhombus: a

Diagonals: $d_{1}, d_{2}$

Consecutive angle: $\alpha , \beta$

Altitude: H

Radius of inscribed circle: r

Perimeter: L

Area: S

1. $\alpha + \beta = 180^{\circ}$
2. $d_{1}^{2} + d_{2}^{2} = 4a^{2}$
3. $h = a sin \alpha = \frac{d_{1}d_{2}}{2a}$
4. $r = \frac{h}{2} = \frac{d_{1}D_{2}}{4a} = \frac{asin\alpha }{2}$
5. L = 4a
6. $S = ah = a^{2}sin\alpha ,$
$S = \frac{1}{2}d_{1}d_{2}.$

Rhombus Formulas

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