Obtuse kusassari: Description da halaye

Bamuda - wani lissafi adadi da ciwon uku juna Lines maki cewa ba karya a kan wani guda line a cikin jirgin sama. A vertices na alwatika - batun da a tushe na malã'iku, da kuma Lines a haɗa su, da ake kira da bangarorin na alwatika. Domin sanin fannin wani adadi, sau da yawa amfani da alwatika ciki sarari.

rarrabuwa

Bayan triangles da unequal tarnaƙi, akwai isosceles, watau, da ciwon biyu m bangarorin biyu. Suna da ake kira a kaikaice, da kuma wani gefen - tushe adadi. Akwai wani irin polygons - equilateral. All uku na sãsanninsu ne na daidai tsawon.

Domin triangles muhimmi digiri ji tsarin. Wadannan alkaluma na iya samun kusurwoyi mabambanta, saboda haka suna classified kamar haka:

• Rectangular - da ciwon wani kwana na 90 digiri. Bangarorin biyu dab da kusurwa, ya kira kafafu, da kuma na uku - da hypotenuse.
• Sharp-kaifi - alwatika, da ciwon duk kaifi kusassari ba wucewa 90 digiri.
• Obtuse - daya kwana mafi girma daga 90 digiri.

Definition da sigogi na alwatika

Kamar yadda muka rigaya muka gani, da alwatika - shi ne daya irin polygon da ciwon uku vertices da wannan mike, su a haɗe. Nuna line ne yawanci guda: sasanninta - kananan Latin haruffa, kuma kishiyar sashi na kowane - m zuwa babban birnin kasar wasika.

Idan ka ƙara sama da dukan kusassari na alwatika, shi zai adadin zuwa 180 digiri. Don gano ciki kusurwa na bukatar 180 Digiri debewa girma da waje kwana na alwatika. Domin gano abin da yake daidai ga kwana wanda yake waje, shi wajibi ne don ƙara biyu ware shi daga kusurwa na ciki.

Kowane alwatika yana da shi m ko obtuse malã'iku, daura da manyan kwana ne mafi girma gefe. Idan mike tsakanin vertices ne guda, bi da bi, da kuma kowane kwana ne 60 digiri.

Obtuse alwatika

Obtuse kwana na alwatika ne ko da yaushe mafi girma daga wani 90 digiri kwana, amma karami-sikelin. Saboda haka, obtuse kwana ne daga 90 zuwa 180 digiri.

The tambaya ko akwai fiye da daya obtuse kwana a cikin wannan adadi? Amsar ta'allaka ne a kan surface: babu, saboda Naira Miliyan Xari da kusassari ya zama kasa da ⁰ 180. Idan biyu kusassari zai zama, misali, a 95 darajõji, da uku kawai babu wuri.

Biyu obtuse polygon ne:

• Idan duka biyu ne daidai da kwana na su gefe located therebetween.
• idan daya gefen da kuma biyu kusassari da suke kusa da shi, shi ne daidaita;
• Idan uku jam'iyyun obtuse triangles ne daidai.

Ƙwarai Lines obtuse alwatika

All triangles da obtuse malã'iku, akwai wani layin kira na ƙwarai. A farko daga cikin wadannan - tsawo. Yana da wani perpendicular daga daya kokuwa don ta daidai gefen. All Heights suna fuskantar a cikin aya, wanda ake cewa da orthocenter. A alwatika da obtuse kusassari shi zai zama a waje na siffar kanta. Amma ga kaifi sasanninta, da cibiyar can aka located a cikin alwatika.

Wani layi - tsakãtsaki ce. Wannan ne line kõma daga tip zuwa dace gefe na cibiyar. All yarda da tsakãtsaki ce a alwatika, da kuma sanya su jeri - cibiyar da nauyi na wani polygon.

Bisector - line bisecting biyu obtuse malã'iku, da sauransu. The mahada daga cikin wadannan uku Lines ne ko da yaushe haka al'amarin kawai a cikin adadi da kuma aka bayyana a matsayin cibiyar daga cikin da'irar rubũtacce a alwatika.

Bi da bi, da cibiyar daga cikin da'irar circumscribed game da Figures za a iya samu daga uku na tsakiya perpendiculars. Wannan line, wanda aka bar fita daga wajen madaidaiciya Lines shiga kokuwa. Place rarrabawa da uku tsakiya perpendiculars na alwatika da ciwon obtuse malã'iku, waje ne da adadi.