Trapezoid kukanxande futhi izakhiwo zalo

Lokhu ukuma weJiyomethri - trapezoid elingunxande - akuyona kuphela wezibalo kodwa futhi ukusatshalaliswa ngokomzimba. Kakade, imuphi lunikeziwe lwezifundo zesikole, eyakhelene isicelo. Ngokwesibonelo, ukwazi ukuthi yini endaweni trapezoid elingunxande, ungakwazi ukuthola kalula izidumbu komgwaqo ngesikhathi ngokunyakaza nombala ngesivinini esikhulu. Indlela ukukwenza? Manje cabanga.

Indawo eqondile izinhlobo izibalo zibalwa ngezindlela ezahlukene. Esimweni sethu kubalulekile ukwazi isamba lezisekelo ezimbili futhi ukuphakama. I last ingenye izinhlangothi amanga nge-engela kwesokudla. Ubude, elamukelekile ibalwa kanje:

S = (a + b) * h / 2

Yiqiniso, lokhu kwencika akuthathiwe ophahleni. Kungenzeka ukuthi othile owaziyo mayelana umugcamkhatsi, equkethe kokubili trapezoid njalo futhi unxande. Uma ebekwe m incwadi, khona-ke inani kungatholakala njengoba: m = (a b +) / 2. Engqondweni umbukiso le ucezu phansi. Uthola into efana ubude ibhokisi ezaziwayo. Kuyinto ekunciphiseni lokhu nje sibalo kokwethembela lokuqala encishisiwe eyakhelwe. Ngokuvamile, ifomula square trapezoid unxande kusikisela ukuthi kungenzeka esikhundleni h (engamamitha) ngasemoyeni obuphelele i-engela 90 degrees. Abanye nje kudingeka ziqonde ukuthi lokhu olungisiswayo ukulingana phakathi kwalezi izinto eziningi.

Ekuqaleni, siye kakade okukhulunywa kungenzeka usebenzisa amagugu sibalo ku physics. Ikakhulukazi, abafundi kufanele kube isimiso kahle aziwayo motion nombala ngesivinini esikhulu. trapezoid kukanxande kunjalo lapho Isivinini sokuqala zero, lo ukusheshisa njalo. Uma iqoqo umsebenzi liyadingeka ukubala endleleni siwela usesimweni esinjalo, kungenzeka ukusebenzisa ifomula lokuthola isikwele. Variable "a" ngeke akuvumele lumelela lonke uhambo. Ngokushesha kufanele ukusho ukuthi sisebenzela e izixhumanisi Cartesian. Khona-ke, "b" lisho isikhathi ngesikhathi okwakukhona ijubane esiphezulu. Ngakho-ke, uma uhlala ngakho kuze kube sekupheleni ezinyakazayo nombala yashesha ke b = 0. H ukuba abe namandla enani sithola izinga izinze. Ngemva abambele amagugu uthola indlela, njengoba kungaba libalwe ifomula S = V isilinganiso * t. Manje uyazi ukuthi ungasiza kanjani trapezoid unxande.

Ukuze ukuxazulula izinkinga zidinga ukwazi nje ifomula elincane sibalo inikezwe. Ngokwesibonelo, isamba engeli ohlangothini enalokho kuthambekela kuyinto 180 degrees. Ovundlile maqondana omunye izinhlangothi iyona hypotenuse unxantathu kwesokudla nge imilenze aziwayo. Khumbula ukuthi hhayi nganoma iyiphi quadrangle, ikakhulukazi trapezoid elingunxande, umbuthano kungenziwa olotshiwe. Inkambo esikoleni kunikezwa izincazelo eziningi, kodwa into eyodwa udinga ukubamba. Ngokwesibonelo, yokuthi trapezoid unxande nto inazo zonke izici evamile, kodwa futhi unalo ezinye izici ezengeziwe. Ucabange ukuthi base kuyinto ezine, ohlangothini lateral - ezintathu, futhi idayagonali yokuxhuma kubo - 5. ngu theorem kaPythagoras, lo 3 * 3 + 4 * 4 = 5 * 5. Lokhu kusikisela ukuthi lena trapezoid elingunxande.

Ngakho wahlangana nomunye sibalo Jomethri. Formula sokuthola endaweni yayo akuyona ngempela ukufunda, kwanele ukuba baqonde isimiso sibalo.