Rütj (Geometrii)

En rütj mä
• huken A, B, C, D
• likelung sidjen a, b, c, d
• winkler α = γ, β = δ
• hööchde h_a = h_b
• diagonaalen e, f

En Rütj as en sjauerhuk mä likelung sidjen, diar oober (normoolerwiis) ei luadrocht tu enööder stun. Wan jo luadrocht stun, do as det Rütj en Kwadroot.

Bereegnangen

Bereegnangsformeln
Areal	$A=a\cdot h_a$
	$A=\frac{e\cdot f}{2}$
	$A=a^2\cdot \sin (\alpha )=a^2\cdot \sin (\beta )$
	$A=\frac{h_a^2}{\sin (\alpha )}=\frac{h_a^2}{\sin (\beta )}$
Amfaadang	$u=4\cdot a$
Sidjenlengde	$a=\frac{1}{2}\cdot \sqrt{e^2+f^2}$
Lengde faan a Diagonaalen	$e=2\cdot a\cdot \cos \left(\frac{\alpha }{2}\right)=2\cdot a\cdot \sin \left(\frac{\beta }{2}\right)$
	$f=2\cdot a\cdot \sin \left(\frac{\alpha }{2}\right)=2\cdot a\cdot \cos \left(\frac{\beta }{2}\right)$
Banenkreisraadius	$r_i=\frac{h_a}{2}=\frac{a\cdot \sin (\alpha )}{2}=\frac{a\cdot \sin (\beta )}{2}$
Hööchde	$h_a=a\cdot \sin (\alpha )=a\cdot \sin (\beta )$
	$h_a=\frac{e\cdot f}{\sqrt{e^2+f^2}}$
Banenwinkler	$\alpha +\beta =180^{\circ }$

Bilen

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  Rütjen uun't flag faan Bayern
• 
  Penrose-Parket
• 
  Rütjenstäär
• 
  Markintiaken faan Renault