Gịnị bụ Central symmetry?

Echiche nke "Central symmetry" ọnụ ọgụgụ na-eburu ịdị adị nke a n'otu isi ihe - na etiti nke symmetry. On ma akụkụ ya na-emi odude ihe nke a ọnụ ọgụgụ. Onye ọ bụla n'ime ha nwere a symmetrical ugbu a.

Ọ ga-kwuru na echiche nke center adịghị adị na Euclidean jiometrị. Na nke iri na otu akwụkwọ na iri atọ na asatọ amụma bụ definition nke gbasara ohere symmetry axis. etiti nke echiche mbụ pụtara na narị afọ nke 16.

The Central symmetry ugbu a na ndị dị otú ahụ a maara nke ọma niile osise, dị ka a gburugburu na a parallelogram. Na mbụ na nke abụọ etiti nke ọnụ ọgụgụ otu. The center nke symmetry nke parallelogram-etinye na nrutu nke edoghi abụrụ si abụghị ihe; na a gburugburu - bụ n'etiti ya. Iduzi e ji enweghi ngwụcha nọmba ụdị ebe ahụ. Onye ọ bụla mgbe nwere ike a center nke symmetry. Na igbe e bụ kpọmkwem itoolu ụgbọ elu. Of niile atọ symmetrical ụgbọ elu perpendicular na nsọtụ. Isii ndị ọzọ ngafe site diagonal n'ọnụ ya. Otú ọ dị, e nwere a na ọnụ ọgụgụ na-enweghị otu. Ọ bụ ihe na aka ike triangle.

Na ụfọdụ ndị si na okwu bụ "Central symmetry" A na-akọwa dị ka ndị a: a geometric ahu (ọgụgụ) na-atụle ga symmetrical na-akwanyere ndị center C, ma ọ bụrụ na onye ọ bụla mgbe A nke ahụ nwere a mgbe E dina n'ime ahụ na ọnụ ọgụgụ, nke mere na Æ nke na-agafe na center, na bee ya na ọkara. e nwere hà ogologo maka nwoke na abụọ nke ihe.

Ihe nwoke na akụkụ nke abụọ halves nke ọnụ ọgụgụ, bụ nke a Central symmetry nwekwara hà. Abụọ na ọnụ ọgụgụ na-agha ụgha na abụọ nke etiti mgbe, na nke a, nwere ike karịrị nke ọ bụla ọzọ. Otú ọ dị, ọ ga-kwuru na ngwa a rụrụ n'ụzọ pụrụ iche. N'adịghị ka mirror, a Central symmetry eburu adiana nke otu akụkụ nke ọnụ ọgụgụ otu narị na iri asatọ degrees gburugburu center. Ya mere, otu akụkụ esee n'ime ọnọdụ ikwu na abụọ mirror. Abụọ nke ọnụ ọgụgụ ike si otú a ga-amanye onye ọ bụla ọzọ, outputting si nkịtị ụgbọelu.

Na algebra izuchenin iberibe na ọbụna ọrụ rụrụ iji grafụ. N'ihi na ọbụna ọrụ eserese na-wuru symmetrically na-akwanyere ndị ahazi anyu. N'ihi na iberibe - na mmekọrita n'ókè nke si malite, ya bụ O. N'ihi ya, maka iberibe ọrụ bụ pụta ụwa Central symmetry, na n'ihi ọbụna - axis.

The Central symmetry na-egosi na a ụgbọelu ọgụgụ axis nke symmetry nke iji abụọ. Na nke a, ndị axis ga-edina perpendicular na ụgbọelu.

Ezi ọsọ Central symmetry ke uwa. nwere ike n'etiti ndị kasị zuru okè ihe atụ nke iche iche n'uba. Akara a, anya-anya dị iche iche nke osisi, mollusks, ụmụ ahụhụ, na ọtụtụ ụmụ anụmanụ. A nwoke nwee mmasị mma nke onye okooko osisi, petals, O bu ihe ijuanya na zuru okè Mee n'ụgbụgbọ mmanụ aṅụ ndokwa na okpu nke sunflower osisi, epupụta na osisi azuokokoosisi. The Central symmetry na ndụ bụ ubiquitous.