Nzira yekuwana nayo nzvimbo yemakatete matatu emakona nenzira isina kujairika

Pazvidzidzo zve geometry pachikoro chesekondari, isu tose tave taudzwa kuti tingawana sei nzvimbo yekatatu yakakosha. Zvisinei, mukati mekugadzirisa chikoro chechikoro, tinogamuchira ruzivo rwakakosha chete uye tinodzidza nzira dzakajairika uye dzakakwana dzekuverenga. Pane nzira dzisina kujairika dzekuwana izvi zvakakosha here?

Sokutaura, ngatitariyei katatu iyo inofungidzirwa kuva mutsara, uye zvakare inoreva pfungwa yeharaunda.

Kakatatu katatu katatu kakanyatsovharwa geometric chimiro, chimwe chengoro dzaro 90 ⁰ . Inherent concepts in the definition of triangle right are the legs and the hypotenuse. Pakave nemakumbo zvinoreva makona maviri, ayo ari pamatanho ekugadzirisa akanganisa maonero akanaka. Kunyengera kunopesana nekona yakarurama. Kaka katatu kakarurama kunogona kuva isosceles (mativi ayo maviri achave akaenzana chete), asi haazombovi akaenzana (kumativi ose ehurefu hwakafanana). Tsanangudzo yekukwirira, vatongi, vecheche uye mamwe mazwi emasvomhu haazokurukurwa zvakadzama. Izvo zviri nyore kuwana mumabhuku ekutaura.

Chikamu chekona katatu. Kusiyana nemakwenzi, mutongi we Basa remapoka ekugadzirisa nzvimbo yenhanhatu haina kushanda. Kana tikataura mutauro wakaoma wemashoko, ipapo nenharaunda yekatatu tinoreva kuti chivako chemufananidzo uyu kutora chikamu che ndege, inoratidzwa nenhamba. Zvakaoma kunzwisisa, iwe unobvumirana. Hatingaedzi kuvhara mukati mutsanangudzo, chinangwa chedu hachisi ichi. Ngatitungamirirei kune-mukuru wekuwana sei nzvimbo yekatatu yakarurama? Hatingazoiti kuverenga isu pachedu, ticharatidza chete maitiro. Nokuda kweizvi tinotsanangura chiziviso: A, B, C - mativi emakatatu, makumbo - AB, BC. Nzvimbo yeAACB yakarurama. S nharaunda yekatatu, h _{n n} ndiko kukwirira kwekatatu, apo nn ndiyo iyo yakasara.

Mutsara 1. Ungawana sei nzvimbo yekona katatu, kana hukuru hwemakumbo acho hunozivikanwa

S = 0.5 * a * b

Method 2. Tsvaga nzvimbo ye isosceles yakarurama katatu

S = 0.5 * h _BC * BC

Mhando 3: Verengai nzvimbo yacho kuburikidza nekatekete

Isu tinopedzisa katatu rectangular kusvika kukona (kana katatu Isosceles) kana rutsanga. Tinowana zvinyorwa zvinyorwa zvinyorwa zvinyorwa zviviri zvakafanana zvidonheredzi. Muchiitiko ichi, kukosha kwenharaunda yeumwe wavo kuchaenzana nehafu yenzvimbo yemufananidzo wakawanikwa. S ye rutsanga inoratidzwa nechibereko chemativi. Ngatitaurirei kukosha iyi M. Inokosha inoda nzvimbo yacho ichaenzana nehafu yeM.

S = 0.5 * M

Method 4. "Pythagorean Pants". Nyaya yakakurumbira yePythagoras

Isu tose tinorangarira mazwi ake: "chiverengero chezvikwata zvemakumbo ...". Asi havasi vose vanogona Iti, uye pano pane "pants". Ichokwadi ndechokuti kubva pakutanga chaiyo Pythagoras akadzidza kuwirirana kwenzvimbo dzezvikwata zvakavakwa pamativi emutsara wakarurama. Sezvo awana hutsika muhuwandu hwemativi ezvikwata, akakwanisa kuwana chimiro chinozivikanwa isu tose. Inogona kushandiswa mumamiriro ezvinhu apo kukosha kweimwe yemapato hakuzivikanwi.

Method 5. Nzira yekuwana nayo nzvimbo yekatatu yakanyatsotenderedzwa neHeron's formula

Iyo inzira zvakare nyore yekuverenga. Nzira yacho inotora kutaura kwemaonero emakatatu kuburikidza nenhamba dzezviyero zvemadivi ayo. Pamusoro pekuverenga zvakakosha kuti uzive maitiro emativi ose ekatatu.

S = (p-AC) * (p-BC), apo p = (AB + BC + AC) * 0.5

Mukuwedzera kune pamusoro apa, kune dzimwe nzira dzakawanda dzekuwana kukosha kwechimiro chakavanzika chakadai sekatatu. Pakati pavo: kuverenga nenzira yekunyorwa kana kuti sedenderedzwa, kuverenga kuburikidza nemashandisirwo emakona, kushandiswa kwevector, kukosha kwakakwana, zvivi, tangents.