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Engela uQondile, esingagwegwesi, abukhali futhi iqonde

Asiqale ihlathululo lokho engela. Okokuqala, it is a sibalo Jomethri. Okwesibili, walibumba is by imishayo amabili, abizwa ngokuthi ama-engeli izinhlangothi. Okwesithathu, zinyanga aphume iphuzu elilodwa, okuthiwa i-vertex ye-engeli. Ngokusekelwe kulezi zici, singenza isinqumo: ekhoneni - umumo weJiyomethri, esakhiwa imishayo ezimbili (izinhlangothi), okuvela kwelinye iphuzu (phezulu).

Basuke ihlukaniswa ngokweminyaka degree value, ilungiselelo maqondana nomunye futhi isihlobo ukuba selilonke. Ake uqale nge izinhlobo engeli ngekwesayizi yabo.

Kukhona izinhlobonhlobo eziningana. Ake sicabangele kohlobo ngalunye.

izinhlobo eziyisisekelo wonke amagumbi amane - iqonde, esingagwegwesi, abukhali futhi engela ngqo.

iqonde

Kubonakala sengathi lokhu:

degree sakhe sihlale ngezinga elithile 90, ngamanye amagama, i-engeli kwesokudla - engela 90 degrees. Uma banayo lezi quadrangles, kokubili skwele isikwele.

buthuntu

It has ifomu:

Degree elithile -engeli obtuse uhlale mkhulu kuka-90 kodwa ngaphansi kuka-180. Lesi simo singenzeka kunoma quadrangles ezifana rhombus, a ngokungenasizathu parallelogram, e emapholigoni.

abukhali

Kubonakala sengathi lokhu:

Degree isilinganiso ye-engeli acute uhlale engaphansi kuka-90 °. Sitholakala yonke quadrangles, ngaphandle square futhi parallelogram ezingafanele.

efakwe

engela enwetshiwe simiswe ngalendlela lelandzelako:

I-polygon ingekho, kodwa kubaluleke ukwedlula abanye. engela Straight - umumo weJiyomethri, degree isilinganiso njalo ulingana 180º. Kungenzeka ukwakha amakhona eduze, ukuchitha kusuka imishayo yalo phezulu eyodwa noma ngaphezulu kuzo zonke izindawo.

Kunezindlela ezimbalwa ezincane engeli zilwane. Awafundiswa ezikoleni, kodwa yazi okungenani khona zabo kuyadingeka. Minor emakhoneni zinhlobo ezinhlanu kuphela:

1. Zero

Kubonakala sengathi lokhu:

kakhulu Igama engela ukhuluma kakade mayelana usayizi wakhe. Ingaphakathi layo lingu-0 o, amanga esandleni ku nomunye njengoba kukhonjisiwe kulesibonelo sibalo.

2. etshekile

Skew kungaba kokubili ngqo futhi ucacise engela ecijile futhi iqonde. isimo Its main - ke akufanele kube elilingana no-0 °, 90 °, 180 °, 270 °.

3. ayizindunduma

Ingabe zero convex, iqonde, esingagwegwesi, emakhoneni abukhali futhi ukhiphe. Njengoba wazi, ngezinga elithile degree engela ayizindunduma - kusukela 0 kuya ku-180.

4. nonconvex

emakhoneni Non-convex Uyi isilinganiso degree of mayelana 181 kuya cishe ku-359, phakathi.

5. Okugcwele

Kuyinto engela egcwele 360 degree ngesilinganiso.

Lezi zonke izinhlobo engeli ngekwesayizi yabo. Manje, cabangela imibono yabo indawo isihlobo indiza komunye nomunye.

1. engeziwe

Lawa engela ezimbili acute, ukwakha umugqa oqondile, okungukuthi, sum yabo-90.

2. Ezihlobene

engeli Eduze aba khona uma uphonsa ngokusebenzisa ezinemininingwane, ngokunembile, ngokusebenzisa vertex yayo, bamba ugongolo ukuphendukela kunoma iluphi uhlangothi. sum yabo uyalingana 180.

3. Kuqondile

Emagumbini mpo ezakhiwe empambana imigqa emibili. izinyathelo zabo ziyisiliva degree alinganayo.

Manje phenya izinhlobo engeli ngokufanele isihlobo embuthanweni. Kunezinhlobo ezimbili kuphela: ephakathi olotshiwe.

1. Central

Kuyinto engela emaphakathi ne-vertex esikhungweni umbuthano. degree yakhe yisikali sokuthi degree okungenani arc, amaqembu Lonyaka.

2. kuqoshwe

Kuqoshwe iyi-engela kabani vertex amanga embuthanweni, futhi izinhlangothi kulo zihlangene. degree yakhe isilinganiso ilingana inxenye arc ngalo uncika.

Kuyinto konke ukwenzani engeli. Manje uyazi ukuthi ngaphezu edume kunazo - abukhali, esingagwegwesi, ngqo futhi ukhiphe - geometry, kukhona nabanye abaningi yohlobo lwazo.

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