Okuqukethwe
Kulolu shicilelo, sizocubungula amafomula ahlukahlukene ongabala ngawo ubude be-trapezoid engunxande.
Khumbula ukuthi enye yezinhlangothi i-perpendicular ezisekelweni zayo, ngakho-ke futhi ukuphakama kwesibalo.
Ukuthola ukuphakama kwe-trapezoid engunxande
Ngobude bezinhlangothi
Ukwazi ubude bazo zombili izisekelo kanye nohlangothi olukhudlwana lwe-trapezoid engunxande, ungathola ukuphakama kwayo (noma uhlangothi oluncane):
Le fomula ilandela ku-. Kulokhu, ukuphakama h umlenze ongaziwa kanxantathu wesokudla one-hypotenuse d, kanye nomlenze owaziwayo - umehluko wezisekelo, okungukuthi (ab).
Ngokusebenzisa izisekelo kanye ne-engeli eseduze
Uma ubude bezisekelo nanoma yimaphi ama-engeli ashubile aseduze nawo kunikezwa, khona-ke ukuphakama kwe-trapezoid engunxande kungabalwa kusetshenziswa ifomula:
Eceleni nasekhoneni eliseduze
Uma ubude bohlangothi olungemuva lwe-trapezoid engunxande kanye ne-engeli eseduze nayo (noma yikuphi) baziwa, kuzokwazi ukuthola ukuphakama kwesibalo ngale ndlela:
Qaphela: usebenzisa le fomula, ungakwazi, phakathi kwezinye izinto, ukufakazela ukuthi uhlangothi oluncane luwukuphakama kwe-trapezoid:
Ngokusebenzisa ama-diagonal kanye ne-engeli ephakathi kwawo
Kuncike ekutheni ubude bezisekelo ze-trapezoid engunxande, ama-diagonal kanye ne-engeli phakathi kwawo kwaziwa, ubude besibalo bungabalwa ngale ndlela elandelayo:
Uma esikhundleni sesamba sezisekelo, ubude bomugqa ophakathi baziwa, ifomula izothatha ifomu:
m – umugqa ophakathi, olingana nengxenye yesamba sezisekelo, okungukuthim = (a+b)/2.
Ngokusebenzisa indawo kanye nezizathu
Uma wazi indawo ye-trapezoid engunxande nobude bezisekelo zayo (noma umugqa omaphakathi), ungathola ukuphakama ngale ndlela:
