parallelogramm haqida tushuncha
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About "parallelogramm haqida tushuncha"
akademik litsey 1.tarif 2.balandlikka oid xossalar 3.dioganalga oid xossalar tarif: qarama–qarshi tomonlari teng va parallel bo’lgan to’rtburchak-parallelogramm deyiladi. 1.ab=cd=a ab//cd 2.ad=bc=b ad//bc qarama-qarshi tomonlari va burchaklari teng bo’ladi. <a=<c= α <b=<d=β α - o’tkir burchak β - o’tmas burchak α + β =1800 p=2(a+b) s=a.b.sinα sp-m=a.ha=b.hb sp-m=ha.hb/sinα 1.kesishganda bir-birini teng 2 ga bo’ladi. e2+f2=2(a2+b2) s=e.f.sinα/2
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