2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Tus naj npawb ntawm cov kab sib luag hauv ib lub voj voog tsis tu ncua Ib qho hexagon tsis tu ncua yog txhais tias yog hexagon uas yog ob qho tib si sib npaug thiab sib npaug. Nws yog bicentric, txhais tau hais tias nws yog ob qho tib si cyclic (muaj ib lub voj voog ncig) thiab tangential (muaj ib lub voj voog inscribed). lub sij hawm apothem (lub vojvoog ntawm lub voj voog inscribed). Tag nrho cov kaum sab hauv yog 120 degrees. https://en.wikipedia.org › wiki › Hexagon
Hexagon - Wikipedia
yog sib npaug rau cov naj npawb ntawm sab uas ib txwm muaj polygon muaj. Qee cov duab zoo li daim duab peb sab scalene thiab parallelogram tsis muaj kab ntawm symmetry. Kab ntawm symmetry nyob rau hauv cov tsiaj ntawv ntawm cov tsiaj ntawv Askiv: … A B C D E K M T U V W Y muaj ib kab ntawm symmetry.
Daim duab twg tsuas muaj 1 kab sib luag xwb?
Trapezium. Lub trapezium muaj kev sib hloov symmetry ntawm kev txiav txim ib. Qee tus trapeziums muaj ib txoj kab sib luag. Lawv hu ua isosceles trapeziums raws li lawv muaj 2 sab ntawm qhov sib npaug ntev li isosceles triangles.
Ib yam khoom puas muaj ib txoj kab sib luag?
Daim duab no tuaj yeem muab faib ua ib txoj hauv kev, ntsug. Yog tias koj sim faib nws kab rov tav, ob sab yuav tsis sib haum. Yog li ntawd, koj tuaj yeem hais tias tus npauj npaim muaj ob sab symmetry. Bilateral symmetry txhais tau hais tias nws muaj ib kab ntawm symmetry uas faib tus npauj npaim nyob rau hauv ib nrab.
Yuav ua li cas muaj kab sib luag?
Ib daim duab tuaj yeem muaj ntau dua ib kab ntawm kev sib luag. Yog li a rectanglemuaj ob kab ntawm symmetry, ib tug equilateral daim duab peb sab muaj peb kab ntawm symmetry, thiab ib tug square muaj plaub. Lub voj voog muaj tus lej tsis kawg ntawm cov kab ntawm symmetry vim nws tuaj yeem muab tais rau txhua txoj kab uas hla.
Cov duab twg muaj 2 kab ntawm symmetry?
Rectangle . Ib daim duab plaub muaj ob kab ntawm symmetry. Nws muaj rotational symmetry ntawm kev txiav txim ob.
Pom zoo:
Thaum muab piv cov kab kab kab thiab cov kab ntsig flatworms qhov twg muaj tseeb?
Ib tug flatworm muaj nyias, dorsoventrally flattened lub cev. Roundworms yog ntau cylindrical hauv cov duab thiab tapered mus rau qhov zoo ntawm ib kawg. Ib yam li ntawd, cov kab mob roundworms muaj ib txheej txheej txheej hu ua cuticle uas lawv tau rov ua dua thoob plaws hauv lawv lub neej thiab thaum lawv loj hlob.
Cov kab kab kab kab kab ua kab mob txaus ntshai npaum li cas?
Nyob rau hauv peb thiab tom ntej instars ntawm lawv txoj kev loj hlob, Pine processionary caterpillars yog mob heev rau daim tawv nqaij ntawm tib neegthiab lwm yam tsiaj. Kev sib cuag yooj yim nrog cov plaub hau ntawm kab ntsig tuaj yeem ua rau pob khaus hnyav (urticaria) thiab khaus qhov muag, thiab qee tus neeg yuav muaj kev fab tshuaj.
Puas muaj cov kab mob symmetrical txav tau?
Thaum cov kab mob radially symmetrical tuaj yeem txav tau yooj yim mus rau txhua qhov kev taw qhia, lawv yuav txav mus qeeb, yog tias tag nrho. Jellyfish feem ntau ntws nrog nthwv dej thiab cov dej ntws, cov hnub qub hiav txwv txav qeeb qeeb piv rau feem ntau cov tsiaj sib txawv, thiab hiav txwv anemones NW nyuam qhuav txav txhua.
Kab ntsig kab kab puas muaj tshuaj lom?
Ib qho ntawm cov kab ntsig uas muaj tshuaj lom thiab tuag taus tshaj plaws yog Giant Silkworm npauj lossis South American Caterpillar (Lonomia obliqua). Cov larvae uas muaj kuab heev no tuaj yeem loj hlob mus txog 2 "(5.5 cm) ntev thiab muaj xim ntsuab lossis xim av.
Puas kab kab rov tav puas muaj txoj kab nqes?
Ib kab kab rov tav muaj nqes xoom vim nws tsis nce vertically (ie y 1 − y 2 =0), hos ib txoj kab ntsug tsis tau txhais txoj kab nqes vim nws tsis khiav horizontally (x 1 − x 2=0). … Vertical kab yog cim sawv cev los ntawm qhov sib npaug, x=a qhov twg a yog x-intercept.
