Piramidi yokhazikika ndi chiyani: tanthauzo, mitundu, katundu

M'buku lino, tiwona tanthauzo, mitundu (yamakona atatu, anayi, anayi) ndi zinthu zazikulu za piramidi yokhazikika. Zomwe zaperekedwa zimatsagana ndi zojambula zowoneka bwino kuti ziziwoneka bwino.

Timasangalala

Tanthauzo la piramidi yokhazikika

Piramidi yokhazikika - izi, zomwe maziko ake ndi polygon wokhazikika, ndipo pamwamba pa chithunzicho akuwonetseratu pakati pa maziko ake.

Mitundu yodziwika bwino ya mapiramidi okhazikika ndi ya katatu, quadrangular ndi hexagonal. Tiyeni tikambirane mwatsatanetsatane.

Mitundu ya piramidi yokhazikika

Piramidi yokhazikika ya katatu

Piramidi yokhazikika ndi chiyani: tanthauzo, mitundu, katundu

  • Base - kumanja / kofanana makona atatu ABC.
  • Nkhope zam'mbali ndizofanana ndi makona atatu a isosceles: ADC, BDC и ADB.
  • Kukonzekera mawu D pamaziko - mfundo O, yomwe ndi malo odutsa atalititi/mitali/magawo awiri a makona atatu ABC.
  • DO ndiye kutalika kwa piramidi.
  • DL и DM - apothemes, mwachitsanzo kutalika kwa nkhope zam'mbali (isosceles triangles). Pali atatu onse (imodzi pa nkhope iliyonse), koma chithunzi pamwambapa chikuwonetsa ziwiri kuti zisakule.
  • ⦟DAM = ⦟ DBL = a (makona pakati pa nthiti zam'mbali ndi maziko).
  • ⦟DLB = ⦟DMA = b (makona pakati pa nkhope zam'mbali ndi ndege yoyambira).
  • Kwa piramidi yotere, ubale wotsatirawu ndi wowona:

    AO:OM = 2:1 or BO:OL = 2:1.

Zindikirani: ngati piramidi yokhazikika ya katatu ili ndi mbali zonse zofanana, imatchedwanso zolondola .

Piramidi yokhazikika ya quadrangular

Piramidi yokhazikika ndi chiyani: tanthauzo, mitundu, katundu

  • Pansi pake ndi quadrilateral wokhazikika ABCD, m'mawu ena, lalikulu.
  • Nkhope zam'mbali ndizofanana ndi makona atatu a isosceles: General Conditions of Purchase, BEC, CED и AED.
  • Kukonzekera mawu E pamaziko - mfundo O, ndiye mphambano ya ma diagonal a sikweya ABCD.
  • EO - kutalika kwa chithunzicho.
  • EN и EM - apothemes (pali 4 pamodzi, ziwiri zokha zomwe zikuwonetsedwa pachithunzichi monga chitsanzo).
  • Makona ofanana pakati pa mbali / nkhope ndi maziko amasonyezedwa ndi zilembo zofanana (a и b).

Piramidi yokhazikika ya hexagonal

Piramidi yokhazikika ndi chiyani: tanthauzo, mitundu, katundu

  • Pansi pake ndi hexagon yokhazikika Mtengo wa ABCDEF.
  • Nkhope zam'mbali ndizofanana ndi makona atatu a isosceles: AGB, BGC, CGD, DGE, EGF и FGA.
  • Kukonzekera mawu G pamaziko - mfundo O, ndi mphambano ya ma diagonal/magawo awiri a hexagon Mtengo wa ABCDEF.
  • GO ndiye kutalika kwa piramidi.
  • GN - apothem (pakhale zisanu ndi chimodzi).

Katundu wa piramidi wokhazikika

  1. Mphepete za mbali zonse za chithunzi ndi zofanana. Mwa kuyankhula kwina, pamwamba pa piramidi ili pamtunda womwewo kuchokera kumakona onse a maziko ake.
  2. Ngodya yapakati pa nthiti zonse zam'mbali ndi pansi ndi yofanana.
  3. Nkhope zonse zimakhotera pansi pa ngodya imodzi.
  4. Magawo a nkhope zonse ndi ofanana.
  5. Ma apothemu onse ndi ofanana.
  6. Kuzungulira piramidi kungafotokozedwe, pakati pawo padzakhala malo ophatikizika a perpendiculars omwe amakokedwa pakatikati pa m'mphepete mwa mbali.Piramidi yokhazikika ndi chiyani: tanthauzo, mitundu, katundu
  7. Chigawo chikhoza kulembedwa mu piramidi, pakatikati pake padzakhala malo ophatikizirapo ma bisectors, omwe amachokera kumakona pakati pa mbali zam'mbali ndi maziko a chiwerengerocho.Piramidi yokhazikika ndi chiyani: tanthauzo, mitundu, katundu

Zindikirani: Mafomu opezera, komanso mapiramidi, amaperekedwa m'mabuku osiyana.

Siyani Mumakonda