Angles Obtuse: Inkcazelo kunye neempawu

Triangle - umzobo nezejometri ukuba imigca oqhagamshelwano phakathi iingongoma ezintathu musa kulala emgceni omnye kule nqwelo-moya. Le eziphezulu lo nxantathu - ingongoma kwi esisekweni engile, kwaye imigca kokuxhuma kuzo, kuthiwa engontsini nxantathu. Ukuze ubone indawo isafobe, badla ukusebenzisa isithuba triangle ingaphakathi.

ngezigaba

Ngaphandle koonxantathu enamacala engalinganiyo, kukho isosceles, oko kukuthi, ukuba macala mabini twatse. Zibizwa osecaleni, kwaye elinye icala - eli nani isiseko. Kukho olunye uhlobo yeepolygons - alinganayo. Zonke ezintathu macala zabo anobude obulinganayo.

Kuba oonxantathu inkqubo womlinganiselo degree azalwa. La manani abe engile ezahlukeneyo, ngoko ke zihlelwa ngolu hlobo lulandelayo:

• Buxande - ukuba i engile degrees 90. La macala mabini omelene ekoneni, ekuthiwa imilenze, kwaye eyesithathu - i hypotenuse;
• Elibukhali-mbini - unxantathu, ninako engile ezibukhali esingadlulanga 90;
• Obtuse - olulodwa ngaphezu degrees 90.

Inkcazo kunye parameters ze unxantathu

Njengoko sele kuchaziwe, unxantathu - yenye uhlobo yepholigoni ukuba eziphezulu ezintathu kwaye tye efanayo, ukuba bamanyene. Bonisa umgca idla iyafana: iikona - iileta ezincinane Latin, kwaye icala ngalinye - okuhambelana ngonobumba omkhulu.

Ukuba nidibanisa onke engile kanxantathu, oko kuya kuthetha ukuba degrees 180. Ukuze ufumanise ikona engaphakathi imfuneko 180 degrees ukhupha ubukhulu iengile lwangaphandle lo nxantathu. Ukuze ufumanise ukuba yeyiphi na elingana angle engaphandle, kuyimfuneko ukuba udibanise ezimbini bazahlule kwi-engile ngaphakathi.

unxantathu nganye kuyo iiengile oyingozi okanye obtuse, malunga ekujikeni enkulu Licala mkhulu. Ukuba ngqo phakathi eziphezulu ayafana, ngokulandelelanayo, yaye engile ngamnye degrees 60.

unxantathu Obtuse

angle Obtuse kanxantathu lisoloko lingaphezulu kune- imo yekona ekwiqondo eliphezulu 90, kodwa ezincinane-scale. Ngenxa yoko, le angle obtuse uvela 90 ukuya 180.

Kuvele umbuzo wokuba ingaba kukho ngaphezu kwesinye engile obtuse kulo mzobo? Impendulo siyifumana phezu komhlaba; hayi, kuba inani engile kufuneka ibe ngaphantsi ^kwe-0 180. Ukuba angles ezimbini iza kuba, umzekelo, kwi 95 degrees, nowesithathu nje kungekho ndawo.

polygon ezimbini obtuse zezi:

• Ukuba bobabini bayalingana kunye engile ecaleni kwabo ibekwe therebetween;
• ukuba kwicala elinye kunye engile ezimbini ecaleni kuyo, bayalingana;
• Ukuba amaqela amathathu oonxantathu obtuse bayalingana.

imigca Ngokumangalisayo unxantathu obtuse

Zonke koonxantathu ne-engile obtuse, kukho umgca ebizwa emangalisayo. Eyokuqala kwezi - ukuphakama. It is a Incopho ukusuka kwenye enekona kwicala yayo ehambisana. Zonke eziphakamileyo zijongene kwindawo, leyo ibizwa ngokuba orthocenter. Unxantathu kunye engile obtuse kuya kuba ngaphandle shape ngokwayo. Njengoko iimbombo ezibukhali, iziko kukho ise loo nxantathu.

Obunye - udibaniso. Nguwo lo umgca athathwe kwincam ukuya kwicala elifanelekileyo kweli ziko. Bonke bayavuma udibaniso kwi unxantathu, kwaye beka ulungelelwaniso lwabo - iziko womxhuzulane ye buyimilo.

Bisector - line bisecting zombini engele obtuse, kunye nabanye. Kuhlangana ezi imigca kathathu akusoloko kunjalo kuphela kulo mzobo kwaye sichazwa embindini wesangqa abhaliwe unxantathu.

Ngenxa yoko, embindini wesangqa nezisekelwe malunga amanani zingafumaneka kule perpendiculars emithathu ephakathi. Le line, awafika ngaphandle iindlela imigca ethe ngqo wokujoyina le enekona. Indawo kuhlangana perpendiculars ezintathu phakathi unxantathu ukuba engile obtuse, engaphandle nani.