Dab tsi kev sib hloov yuav daim ntawv qhia ib txwm hexagon rau nws tus kheej?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Muaj 6 lub kaum sab xis ntawm cov neeg nyob ze vertices, lawv txhua tus sib npaug (vim a hexagon tsis tu ncua ) thiab lawv cov sum yog 360 °. Yog li txhua lub kaum sab xis muaj qhov ntsuas ntawm 360 ° / 6 = 60 °. Txhua qhov tom ntej kev sib hloov los ntawm 60 ° thiab daim ntawv qhia ib hexagon rau nws tus kheej.

Ib yam li ntawd, qhov kev hloov pauv twg yuav ua rau ib qho Nonagon rau nws tus kheej?

Rau ib txwm tsis yog , nws maps rau nws tus kheej 9x ua a kev sib hloov ntawm 360 °. Ib daim duab yog hais tias muaj kev hloov symmetry yog tias nws maps rau nws tus kheej hauv qab kev sib hloov txog ib qho chaw ntawm nws qhov chaw. Qhov kev txiav txim ntawm kev hloov symmetry yog tus naj npawb ntawm lub sij hawm cov duab maps rau nws tus kheej thaum a kev sib hloov ntawm 360 °.

Kuj Paub, qhov kev sib hloov yog tias muaj daim ntawv qhia daim duab rau nws tus kheej? Ib daim duab hauv lub dav hlau muaj kev hloov symmetry yog tus daim duab tau mapped rau nws tus kheej los ntawm kev sib hloov ntawm 0 ° thiab 360 ° txog qhov chaw ntawm tus daim duab . Tsis muaj txoj kev tig no daim duab thiab muaj map rau nws tus kheej . Yog li, nws tsis muaj kev hloov symmetry.

Raws li txoj cai, kev hloov pauv dab tsi yuav nqa lub Pentagon mus rau nws tus kheej?

Qhov no yog vim hais tias lub pentagon tsis tu ncua muaj kev sib hloov symmetry, thiab egin{align*}72^circend{align*} yog qhov tsawg kawg nkaus ntawm qib koj tuaj yeem tig lub pentagon thiaj li nqa nws mus rau nws tus kheej.

Dab tsi yog tus lej tsawg tshaj plaws uas xav tau los tig lub hexagon mus rau nws tus kheej?

Ib qho kev sib hloov muaj 360 qib. Txij li niaj hnub Pentagon muaj 5 sab thiab txhua tus ntawm lawv siv 360/5 = 72 degrees thaum saib los ntawm qhov chaw, yog tias peb tig ib txwm Pentagon los ntawm 72 degrees peb yuav tau zoo ib yam li peb pib los ntawm. Yog li ntawd teb yog 72 qib.