x10 – S, uchburchakning yuzi;
x11 – P, uchburchakning perimetr;
x12 – p, yarimperimetr;
x13 – R, uchburchakga tashqi chizilgan aylana radiusi;
x14 – r, uchburchakga ichki chizilgan aylana radiusi;
x15 – la, a tomonga tushirilgan bissektrisa;
x16 – lb, b tomonga tushirilgan bissektrisa;
x17 – lc, c tomonga tushirilgan bissektrisa;
x18 – ma, a tomonga tushirilgan mediana;
x19 – mb, b tomonga tushirilgan mediana;
x20 – mc, c tomonga tushirilgan mediana;
x21 – ha, a tomonga tushirilgan balandlik;
x22 – hb, b tomonga tushirilgan balandlik;
x23 – hc, c tomonga tushirilgan balandlik;
x24 – c1(l), bissektrisa bo’lgan tomon birinchi bo’lagi;
x25 – c2(l), bissektrisa bo’lgan tomon ikkinchi bo’lagi;
x26 - , a tomonga parallel o’rta chiziq;
x27 - , b tomonga parallel o’rta chiziq;
x28 - , c tomonga parallel o’rta chiziq;
x29 - , a tomon qarshisidagi ichki burchak kosinusi;
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