Video: Lub square puas muaj ib nrab tig symmetry?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A square yog ntau symmetrical tshaj tsab ntawv O, tab sis tsawg dua symmetrical tshaj lub voj voog. Yog koj tig a square 90°, ib yuav saib raws nraim li nws tau pib nrog, tab sis yog tias koj tig nws los ntawm lub kaum sab xis tsawg dua 90 °, nws yuav tsis zoo li qub. A square muaj 1/4- tig kev hloov symmetry (los yog 90 ° tig symmetry ).
Ua kom pom qhov no, ib nrab tig symmetry yog dab tsi?
A ib nrab - tig txhais tau tias tig los ntawm 180 ° ib lub hlis twg- tig txhais tau tias tig los ntawm 90 °. Kev sib hloov yuav yog clockwise los yog anticlockwise. Yog tias, tom qab kev sib hloov, ib qho khoom zoo ib yam nkaus, peb hais tias nws muaj kev sib hloov symmetry.
Yuav ua li cas muaj ntau yam symmetry ib square? 4
Tseem yuav paub yog, puas yog ib lub square muaj point symmetry?
Thaum lub diagonal ntawm ib lub duab plaub tsis yog kab ntawm symmetry , lub duab plaub puas muaj ib txoj kab ntsug thiab kab rov tav ntawm symmetry , raws li pom saum toj no. Yeej, ib daim duab muaj point symmetry thaum nws zoo li qub thaum up-side-down, (tso 180º), raws li nws ua sab xis-up.
Puas yog tsab ntawv N symmetrical?
Cov ntawv zoo li B thiab D muaj kab rov tav ntawm symmetry : lawv qhov saum thiab hauv qab sib phim. Ib txhia ntawv Piv txwv li, X, H, thiab O, muaj ob txoj kab ntsug thiab kab rov tav ntawm symmetry . Thiab qee qhov, zoo li P, R, thiab N , tsis muaj kab symmetry.
Pom zoo:
Puas yog tag nrho cov quadrilaterals muaj ib txoj kab ntawm symmetry?
Ib txoj kab uas qhia txog ib daim duab rau nws tus kheej yog hu ua kab ntawm symmetry. Ib daim duab uas tuaj yeem nqa mus rau nws tus kheej los ntawm kev sib hloov yog hais tias muaj kev sib hloov symmetry. Txhua plaub-sided polygon yog quadrilateral
Puas yog tsab ntawv N puas muaj ib txoj kab ntawm symmetry?
Cov tsiaj ntawv zoo li B thiab D muaj kab rov tav ntawm symmetry: lawv sab saum toj thiab hauv qab qhov sib tw. Qee cov tsiaj ntawv, piv txwv li, X, H, thiab O, muaj ob txoj kab ntsug thiab kab rov tav ntawm symmetry. Thiab qee qhov, zoo li P, R, thiab N, tsis muaj kab sib luag
Koj puas tuaj yeem kos ib daim duab peb sab uas muaj ib kab ntawm symmetry?
(a) Yog, peb tuaj yeem kos ib daim duab peb sab isosceles uas tsuas muaj 1 kab ntawm symmetry
Puas yog daim duab peb sab muaj ib txoj kab ntawm symmetry?
Daim duab peb sab txoj cai, yog tias nws yog isosceles txoj cai kaum sab xis ces nws yuav muaj ib kab ntawm symmetry. Yog hais tias nws yog equilateral txoj cai angled daim duab peb sab ces nws yuav muaj peb kab ntawm symmetry. Yog hais tias nws yog scalene txoj cai angled daim duab peb sab ces nws yuav tsis muaj kab ntawm symmetry
Daim duab peb sab muaj pes tsawg kab ntawm symmetry?
Daim duab peb sab Equilateral daim duab peb sab (tag nrho cov sab sib npaug, tag nrho cov kaum sib npaug) Isosceles Daim duab peb sab (ob sab sib npaug, ob lub kaum sib npaug) Scalene daim duab peb sab (tsis muaj sab sib npaug, tsis muaj kaum sib npaug) 3 Kab ntawm Symmetry 1 Kab ntawm Symmetry Tsis Kab ntawm Symmetry