Chii chinonzi piramidhi yenguva dzose: tsananguro, marudzi, zvivakwa

Muchinyorwa chino, tichatarisa tsananguro, mhando (triangular, quadrangular, hexagonal) uye hukuru hwepiramidhi yenguva dzose. Ruzivo rwakaratidzwa runoperekedzwa nemifananidzo inodhirowa kuti ione zviri nani.

Tsanangudzo yepiramidhi yenguva dzose

Regular piramidhi - ichi, chigadziko chayo chiri cheporigoni chenguva dzose, uye pamusoro pechifananidzo chinoratidzwa pakati pechigadziko chayo.

Mhando dzakawanda dzemapiramidhi akajairwa ane triangular, quadrangular uye hexagonal. Ngatizviongororei zvakadzama.

Mhando dzenguva dzose piramidhi

Regular triangular piramidhi

• Hwaro - kurudyi / equilateral triangle ABC.
• Zviso zveparutivi zvakafanana isosceles triangles: ADC, BDC и ADB.
• Projection mativi D pahwaro - pfungwa O, inova nzvimbo yemharadzano yehurefu/mapakati/maviri ekona yegonyo ABC.
• DO ndiko kureba kwepiramidhi.
• DL и DM - apothemes, kureva kureba kwezviso zveparutivi (isosceles triangles). Kune matatu muhuwandu (chimwe chechiso chega chega), asi mufananidzo uri pamusoro unoratidza maviri kuti urege kuwandisa.
• ⦟DAM = ⦟ DBL = a (makona pakati pembabvu dzeparutivi nechigadziko).
• ⦟DLB = ⦟DMA = b (makona ari pakati pezviso zveparutivi nendege yepasi).
• Kune piramidhi yakadaro, hukama hunotevera ndehwechokwadi:

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

Cherechedza: kana piramidhi yenguva dzose ine triangular ine mipendero yose yakaenzana, inonziwo zvechokwadi .

Regular quadrangular piramidhi

• Nheyo yacho inogara quadrilateral ABCD, nemamwe mazwi, sikweya.
• Zviso zveparutivi zvakaenzana isosceles triangles: General Conditions of Purchase, BEC, CED и AED.
• Projection vertices E pahwaro - pfungwa O, ndiyo nzvimbo yemharadzano yemadiagonals eskweya ABCD.
• EO - kureba kwechimiro.
• EN и EM - apothemes (kune 4 pamwe chete, maviri chete anoratidzwa mumufananidzo semuenzaniso).
• Makona akaenzana pakati pemativi / zviso uye chigadziko zvinoratidzwa nemabhii anoenderana (a и b).

Regular hexagonal piramidhi

• Nheyo ndeye hexagon yakajairwa ABCDEF.
• Zviso zveparutivi zvakaenzana isosceles triangles: AGB, BGC, CGD, DGE, EGF и FGA.
• Projection mativi G pahwaro - pfungwa O, ndiyo mharadzano poindi yediagonals/bisectors yehexagon ABCDEF.
• GO ndiko kureba kwepiramidhi.
• GN - apothem (panofanira kuva nevatanhatu pamwe chete).

Zvivakwa zvepiramidhi yenguva dzose

1. Mapendero ose emativi emufananidzo akaenzana. Mune mamwe mazwi, pamusoro pepiramidhi iri pachinhambwe chakafanana kubva kumakona ese echigadziko chayo.
2. Kona iri pakati pembabvu dzose dzeparutivi nehwaro hwakafanana.
3. Zviso zvese zvakarerekera kunheyo pakona imwechete.
4. Nzvimbo dzezviso zvemativi ese dzakaenzana.
5. Mapothem ese akaenzana.
6. Yakapoteredza piramidi inogona kutsanangurwa, iyo pakati payo ichava nzvimbo yemharadzano yeperpendiculars inokweverwa kusvika pakati pemipendero yemativi.
7. A sphere inogona kunyorwa mupiramidhi, pakati payo ichava nzvimbo yemharadzano ye bisectors, inobva mumakona pakati pemakona emativi uye nheyo yemufananidzo.

Cherechedza: Mafomu ekutsvaga, pamwe nemapiramidhi, anoratidzwa mumabhuku akasiyana.