Indlela yokuthola ukuphakama unxantathu?

Ukuze izinkinga eziningi weJiyomethri udinga ukuthola ukuphakama umumo inikezwe. Lezi zinkinga abe SIZUZISA. Ngesikhathi kwakhiwa ukuphakama ukuzimisela kusiza ukubala lemali edingekile of material futhi ukunquma wenza kahle kanjani amagquma kanye ukuvuleka. Ngokuvamile ukwakha amaphethini kudingeka baqaphe property izibalo weJiyomethri.

Kubantu abaningi, naphezu amamaki amahle emsebenzini wesikole, ekwakhiweni izibalo ezilula weJiyomethri ebuza indlela ukuthola ukuphakama unxantathu noma parallelogram. Ngaphezu kwalokho, incazelo ukuphakama unxantathu iyona eyinselele kakhulu. Lokhu kungenxa yokuthi unxantathu kungaba acute, obtuse, isosceles noma unxande. Ukuze ngamunye izinhlobo onxantathu babe imithetho yabo yokwakha kanye ukubala.

Indlela yokuthola ukuphakama unxantathu lapho bonke engele ibukhali, indlela ingcaca

Uma tonkhe babe unxantathu acute (engela unxantathu ngamunye degrees ngaphansi kuka 90), khona-ke ukuthola ukuphakama kudingeka kwenziwe elilandelayo.

1. Ngokusho setha kwemigomo unxantathu yakha.
2. Sibethula notation. A, B no-C kukhona vertices sibalo. I-engeli elihambisana vertex ngamunye - α, β, γ. Ngaphesheya ohlangothini emakhoneni - a, b, c.
3. Ukuphakama ubizwa ngokuthi perpendicular sesehlela vertex ukuze esesayidini unxantathu. Ukuze uthole unxantathu eziphakeme ubambe perpendiculars ukwakhiwa: i-engeli vertex α, kuse ecaleni a, vertex engela β b uhlangothi, nokunye.
4. Iphuzu empambana ukuphakama futhi ohlangothini ezikhonjiswe H1, kodwa H1 eliphezulu kakhulu. Iphuzu empambana ukuphakama futhi ohlangothini b kuyinto H2, le h2 ukuphakama, ngokulandelana. C ukuphakama side h3, futhi H3 owela iphuzu.

Okulandelayo, ukuze uhlobo unxantathu ngamunye sizosebenzisa okufanayo notation izinhlangothi, engeli, eziphakeme futhi vertices of onxantathu.

Ukuphakama unxantathu ngodobo obtuse

Manje sibheke ukuthi ungathola kanjani ukuphakama unxantathu uma omunye engela obtuse (ngaphezu kuka-90 degrees). Kulokhu, ukuphakama sisuselwa engela obtuse ongaphakathi unxantathu. Lezi ezinye ezimbili ukuphakama kuyoba ngaphandle unxantathu.

Ake sithi kule unxantathu angles α futhi β kuyoba abukhali, kanye engela γ - i obtuse. Khona-ke lokwakha eziphakeme, ephuma emakhoneni α-beta, kubalulekile ukuqhubeka bahlukene yabo izinhlangothi unxantathu, a perpendicular.

Indlela yokuthola ukuphakama unxantathu isosceles

Ngo abe semqoka kangaka kukhona izinhlangothi ezimbili alinganayo futhi base wherein engele yilezi ngasesinqeni, futhi ilingana nomunye. Lokhu ukulingana ezinhlangothini nama-engeli kusiza isakhiwo ukuphakama futhi ukubala kwabo.

Okokuqala, ukudweba unxantathu uqobo. Ake izinhlangothi b futhi c, kanye nama-engeli β, γ kukhona ngokulandelana alinganayo.

Manje dweba ukuphakama kusukela vertex we α engela, it is ezikhonjiswe h1. Ukuze lokhu ukuphakama unxantathu isosceles kuyinto ngesikhathi esifanayo a bisector futhi aphansi namaphakathi.

Ngokulandelayo, sitshelwa ngo ukwakha ezinye ukuphakama ezimbili: H2 ohlangothini b kanye β engela, h3 Ngasohlangothini c kanye engela γ. Lezi eziphakeme zilingana.

Ukuze base, ungakwazi kuphela ukwenza into eyodwa ukwakha. Ngokwesibonelo, imali lesemkhatsini - ingxenye yokuxhuma vertex i unxantathu isosceles futhi uhlangothi, isisekelo sokuthola engamamitha kanye bisector. Futhi ukubala ukuphakama ubude nezinye izinhlangothi ezimbili bangakha ukuphakama eyodwa kuphela. Ngakho, ukuze imidwebo ukuchaza kanjani ukubala ukuphakama unxantathu isosceles, ezimbili eziphakeme kwanele ukuze uthole ezintathu.

Indlela yokuthola ukuphakama unxantathu wesokudla

Ngo unxantathu lokunquma ukuphakama eziningi kulula kunabanye. Lokhu kungenxa yokuthi bona ngokwabo imilenze ngesikhathi engeli kwesokudla, futhi sinjalo eziphakeme.

Ukwakha ukuphakama lwesithathu, njengenjwayelo, le perpendicular kokujoyina vertex ye-engeli kwesokudla futhi kolunye uhlangothi. Ngenxa yalokho, ukuze ufunde indlela ukuthola ukuphakama unxantathu, kulesi simo, kuthatha isakhiwo esisodwa kuphela.