Trapezoid uxande neempawu zayo

Le imilo zejiyometri - trapezoid eziziingxande - nje kuphela imathematika kodwa ukwabiwa emzimbeni. Ngapha koko, yintoni enikwe kwikharityhulam yesikolo, ecaleni kwisicelo. Ngokomzekelo, ukwazi oko yi ariya ye trapezoid buxande, unako lula ukufumana imizimba wendlela kwi isindululo ngokufanayo olukhawulezileyo. Indlela ukukwenza oko? Qondani.

Indawo ezithile iindidi amanani kubalwa ngeendlela ezahlukeneyo. Kwimeko yethu kuyimfuneko ukwazi inani zeenqwelwana ezimbini ukuphakama. Le yokugqibela yenye emacaleni elele kwindawo esinekona sasekunene. Iyonke, iziphumo ebezifuna ibalwa ngolu hlobo lulandelayo:

S = (a + b) * h / 2

Kakade ke, oku kuxhomekeka kukuba angenziwa eluphahleni. Kuyenzeka ukuba umntu uyazazi osembindini, equlethe zombini trapezoid rhoqo kunye buxande. Ukuba otyunjwe m ileta, ngoko ke ixabiso ingafunyanwa njenge: m = (a + b) / 2. Engqondweni Icwecwe phantsi le piece. Ufumana into efana ubude kwibhokisi eyaziwa. Kuyinto ekunciphiseni oku nje oyintsobi yalowo ukuxhomekeka yokuqala kwanciphisa kwakhiwa. Ngokubanzi, ifomula square trapezoid yoxande lubonisa ithuba ukutshintshwa h (yokuphakama) ngasemoyeni ubude kwi-engile degrees 90. Abanye kufuneka nje ukuqonda ukuba oku ugwetyelwayo ukulingana phakathi kwezi amanani.

Ekuqaleni, sele sitshilo ithuba lokusebenzisa amaxabiso nani physics. Ngokukodwa, abafundi kufuneka babe Umgaqo kakuhle eyaziwayo motion ngokufanayo okukhawulezileyo. trapezoid yoxande kunjalo xa uqina yokuqala zero, kukukhawuleziswa njalo. Ukuba iseti umsebenzi kufuneka ukubala indlela onqamlezwe kwimeko enjalo, kunokwenzeka ukuba usebenzise indlela okufumana isikwere. Eliguqukayo "a" kunindulula ukuchaza ukuba uhambo yonke. Ngoko nangoko ke ithi ukuba uyasebenzisana ezihambelanayo cartesian. Emva koko, "b" libhekisela kwixesha apho kwakukho kwesona santya siphezulu. Ngako oko, ukuba kuhlala kunjalo de kube sekupheleni sesindululo ngokufanayo olungongezwanga, ngoko b = 0. H ukuba ixabiso siya kufumana ngokucothayo. Emva kokuba kufakwe iinqobo ufumana indlela, njengoko kungaba ibalwe yi kwifomula S = V umlinganiselo * t. Ngoku uyazi ukuba ungamnceda njani trapezoid yoxande.

Ukusombulula kufuneka iingxaki bazi nje indlela elincinci kuba apha inani. Umzekelo, udibaniso engile kwicala athambekele yi degrees 180. Oxwesileyo ngokuphathelele omnye emacaleni na hypotenuse kanxantathu ilungelo kunye imilenze ezaziwayo. Khumbula ukuba ayikho na quadrangle, ingakumbi xa trapezoid ebuxande, isangqa na sibhalwe. Ikhosi yesikolo unikwa iinkcazelo ezininzi, kodwa ke eyona nto ufuna ukubamba. Umzekelo, isibakala sokuba trapezoid yoxande unawo onke iimpawu njengesiqhelo, kodwa inazo iimpawu ezongezelelweyo. Ukucinga ukuba isiseko amane, icala lateral - amathathu, kwaye diagonal kokuxhuma kubo - 5. Xa le theorem kaPythagoras, i-3 * 3 + 4 * 4 = 5 * 5. Oku kubonisa ukuba olu trapezoid yoxande.

Ngoko sadibana nomnye nani zejometri. Formula for ukufumana indawo yayo ephambili ukufunda, kwanele ukuba uqonde umgaqo ukubala.