Aqqaṛ

Aqqaṛ d azgen n wekdu n twinest neɣ tsegla neɣ n uglay. Aqqaṛ yegda amaccaq yebṭan gar n wammas n twinest ( neɣ tsegla neɣ n uglay) de yal agaz deg tlisa n telɣa.

Aqqaṛ
Isefka
Adu-smil n	Aftus (tanzeggit), radial line (en) d Tiddi (tusnakt)
Amur seg	Akdu
Tasekta tasengamt	${\mathsf {L}}$
Azamul n tesmekta (LaTeX)	$r$ d $R$
Tigget n wakat tasmaglant	amiter

Aqqaṛ, Akdu, Taseɣleyt, Tawinest

Aqqaṛ yegda taseɣleyt yebṭa ɣef 2 Pi ( $r={\frac {c}{2\pi }}$ ).

Aqqaṛ n twinest

Assaɣ gar n waqqaṛ $R$ d tseɣleyt $L$ n twinest d: $R={\frac {L}{2\pi }}$.

I usiden n waqqaṛ $R$ i twinest i yekkan ɣef 3 n wagazen $A,B,C$ nezmer ad nessemres taftart-a :

$R={\frac {a}{2\sin \alpha }}$, neɣ $a$ est la longueur $BC$ et $\alpha$ akat n tɣmert ${\widehat {BAC}}$ .

Ma ttwanefken 3 n wazagen s yimsidag-nsen $(x_{1},y_{1})$, $(x_{2},y_{2})$ d $(x_{3},y_{3})$, nezmer daɣen ad nessemres taftart-a (voir asaduf n uwsi et Tajumma n ukeṛdis) :