2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lawv tshwj xeeb vim txhua lub ntsej muag yog lub ntsej muag tsis tu ncua polygon Ib txwm muaj hexagon txhais tau 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
ntawm qhov loj thiab zoo tib yam. Piv txwv li: txhua lub ntsej muag ntawm lub voos xwmfab yog square. Lawv kuj yog convex (tsis muaj "dents" lossis indentations hauv lawv). Lawv muaj npe tom qab Plato, tus kws tshawb fawb Greek nto moo thiab lej.
Vim li cas Platonic solids hu ua platonic?
Lawv muaj npe rau tus kws tshawb fawb Greek thaum ub Plato uas xav txog hauv ib qho ntawm nws cov lus sib tham, Timaeus, tias cov khoom qub tau ua los ntawm cov khoom tsis tu ncua. …
Vim li cas Platonic solids tseem ceeb?
tsib Platonic Solids tau xav tias sawv cev rau tsib lub ntsiab lus: lub ntiaj teb, huab cua, hluav taws, dej, thiab lub ntiaj teb. Lub cube cuam tshuam nrog lub ntiaj teb, thiab rov txuas lub zog rau qhov xwm txheej. Lub octahedron yog txuam nrog huab cua, thiab cog kev lees paub thiab kev khuv leej.
Dab tsi ua rau Platonic khoom sib txawv ntawm lwm cov khoom?
Platonic khoom, ib qho ntawm tsib geometric solids uas nws lub ntsej muag yog txhua yam zoo tib yam, tsis tu ncua polygons sib ntsib ntawm tib yam peb sabangles. Kuj tseem hu ua tsib polyhedra tsis tu ncua, lawv muaj tetrahedron (los yog pyramid), lub voos xwmfab, octahedron, dodecahedron, thiab icosahedron.
Platonic cov khoom siv niaj hnub no li cas?
Sib nrug ntawm lawv qhov kev zoo nkauj, ntau qhov kev siv ntawm Platonic cov khib nyiab muaj nyob hauv thev naus laus zis. Piv txwv li,tetrahedrons nquag siv hauv hluav taws xob, icosahedrons tau ua pov thawj tias muaj txiaj ntsig zoo hauv kev ua qauv geophysical, thiab cov neeg hais lus nrog lub ntsej muag polyhedral yog siv los tawm suab lub zog hauv txhua qhov kev qhia.
Pom zoo:
Puas yog phagocytes tshwj xeeb lossis tsis tshwj xeeb?
Enzymes pom hauv lub cell ces zom cov kab mob txhawm rau txhawm rau rhuav tshem nws. Raws li phagocytes ua li no rau tag nrho cov kab mob uas lawv ntsib, lawv hu ua tsis tshwj xeeb. Puas yog phagocytes ib feem ntawm cov tshuaj tiv thaiv kab mob tshwj xeeb lossis tsis tshwj xeeb?
Puas yog meristems tshwj xeeb lossis tsis tshwj xeeb?
Meristems yog thaj chaw ntawm cov hlwb tsis tshwj xeeb hauv cov nroj tsuag uas muaj peev xwm faib cov cell. Meristems ua rau cov hlwb tsis tshwj xeeb uas muaj peev xwm dhau los ua ib hom cell tshwj xeeb. Puas yog cov ntaub so ntswg meristematic tshwj xeeb?
Puas yog tshwj xeeb thiab tshwj xeeb?
Raws li lub npe qhov txawv ntawm kev tshwj xeeb thiab kev tshwj xeeb. yog tias kev tshwj xeeb yog thaum tshwj xeeb yog txheej txheem tshwj xeeb. Qhov twg yog Qhov Tshwj Xeeb lossis Tshwj Xeeb? "Specialisation" thiab "
Vim li cas cov duab peb sab tshwj xeeb tshwj xeeb?
Kev paub txog kev sib raug zoo ntawm cov ces kaum lossis qhov sib piv ntawm ob sab ntawm cov duab peb sab tshwj xeeb tso cai rau ib tus kom sai sai suav ntau qhov ntev hauv cov teeb meem geometric yam tsis muajsiv rau ntau txoj hauv kev. Puas yog daim duab peb sab tshwj xeeb?
Vim li cas cov xeeb ntxwv thiaj li tshwj xeeb?
Kev sib raug zoo ntawm kev xav ntawm cov tub ntxhais hluas cov xeeb ntxwv thiab cov pog yawg tiv thaiv kev nyuaj siab thiab ua rau muaj kev puas siab puas ntsws zoo nyob rau ob tiam neeg, raws li kev tshawb fawb los ntawm Boston College. Kev siv sijhawm zoo nrog cov menyuam yaus kuj tau txuas rau cov tsos mob tsawg dua ntawm kev nyuaj siab hauv cov niam tais yawm txiv.
