Hano hari ibizingo bibiri murwego rwo Kwishyira hamwe Umupira Wizengurutse imbere, werekana umuzenguruko, hamwe na centre ya curvature yumuzingi ihujwe na centre yikigo. Kubwibyo, uruziga rwimbere, umupira nuwufashe, uruziga rwo hanze rushobora kugorama muburyo bwisanzuye. Kubwibyo, gutandukana kubera ...
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