Video: Yuav ua li cas ua ib daim duab peb sab nrog lub dome?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
- Kauj ruam 1: Ua Daim duab peb sab . Rau tsim ib geodesic dome qauv, pib los ntawm ua daim duab peb sab .
- Kauj ruam 2: Ua 10 Hexagons thiab 5 Ib nrab Hexagons.
- Kauj Ruam 3: Ua 6 Pentagon.
- Kauj Ruam 4: Txuas Hexagons rau Pentagon.
- Kauj ruam 5: Txuas Tsib Pentagons rau Hexagons.
- Kauj Ruam 6: Txuas 6 Ntxiv Hexagons.
- Kauj Ruam 7: Txuas Cov Half-hexagons.
Xav txog qhov no, dab tsi yog qhov muaj zog dua lub dome lossis daim duab peb sab?
Geodesic domes txawv. Tsis tsuas yog lawv suav nrog lub zog ntawm lub cev muaj zog, tab sis lawv kuj tau ua los ntawm ntau yam daim duab peb sab . Daim duab peb sab yog cov muaj zog tshaj zoo vim lawv muaj cov ces kaum ruaj thiab tsis distort yooj yim heev.
Kuj Paub, koj ua li cas ua lub dome geometric?
- Kauj Ruam 1: Ua Daim duab peb sab. Txhawm rau tsim cov qauv geodesic dome, pib los ntawm kev ua daim duab peb sab.
- Kauj Ruam 2: Ua 10 Hexagons thiab 5 Ib nrab Hexagons.
- Kauj Ruam 3: Ua 6 Pentagons.
- Kauj Ruam 4: Txuas Hexagons rau Pentagon.
- Kauj ruam 5: Txuas Tsib Pentagons rau Hexagons.
- Kauj Ruam 6: Txuas 6 Ntxiv Hexagons.
- Kauj Ruam 7: Txuas lub Half-hexagons.
Qhov thib ob, pes tsawg daim duab peb sab nyob rau hauv ib tug geodesic dome?
Cov lus nug ntawm Geodesic Domes Qhov no 3 zaus octahedral geodesic dome yog polyhedron inscribed nyob rau hauv ib tug kheej kheej uas tau los ntawm subdividing txhua lub ntsej muag ntawm ib tug octahedron rau hauv 9 congruent equilateral daim duab peb sab thiab projecting sab nraud los ntawm qhov chaw.
Domes ua haujlwm li cas?
Lub hemispherical dome yog ib tug nto tsim los ntawm kev sib hloov nyob ib ncig ntawm ib tug ntsug axis ntawm ib tug semicircle. Zoo li lwm yam "rotational domes " tsim los ntawm kev sib hloov ntawm ib tug nkhaus nyob ib ncig ntawm ib tug ntsug axis, hemispherical domes muaj puag ncig thiab kab rov tav seem thiab yog hom "circular dome "rau qhov ntawd.
Pom zoo:
Dab tsi yog equidistant los ntawm peb sab ntawm daim duab peb sab?
Lub ntsiab lus uas sib npaug rau txhua sab ntawm daim duab peb sab yog hu ua incenter: Ib qho nruab nrab yog ib qho kab uas muaj ib qho ntawm nws qhov kawg ntawm lub vertex ntawm daim duab peb sab thiab lwm qhov kawg ntawm qhov nruab nrab ntawm sab opposite lub vertex. Peb qhov nruab nrab ntawm ib daim duab peb sab sib ntsib hauv centroid
Koj tuaj yeem ua pov thawj li cas 2 daim duab peb sab zoo sib xws siv lub kaum sab xis sab SAS zoo sib xws postulate?
SAS Similarity Theorem hais tias yog ob sab hauv ib daim duab peb sab yog proportional rau ob sab hauv lwm daim duab peb sab thiab lub kaum sab xis nyob rau hauv ob qho tib si congruent, ces ob daim duab peb sab zoo ib yam. Ib qho kev hloov pauv zoo sib xws yog ib lossis ntau qhov kev hloov pauv tsis tu ncua ua raws li kev dilation
Vim li cas nws thiaj li hais tias lub Orthocenter ntawm daim duab peb sab obtuse yuav tsum nyob rau sab nraud ntawm daim duab peb sab?
Nws hloov tawm tias tag nrho peb qhov siab ib txwm sib tshuam ntawm tib lub ntsiab lus - lub npe hu ua orthocenter ntawm daim duab peb sab. Lub orthocenter tsis yog ib txwm nyob hauv daim duab peb sab. Yog tias daim duab peb sab yog obtuse, nws yuav nyob sab nraud. Txhawm rau ua kom qhov no tshwm sim cov kab qhov siab yuav tsum tau txuas ntxiv kom lawv hla
Dab tsi yog kev sib raug zoo ntawm sab nrauv thiab sab hauv lub kaum sab xis ntawm daim duab peb sab?
Cov kaum sab hauv yog hu ua Sab hauv cov ces kaum. Cov lej ntawm cov kaum sab hauv ntawm daim duab peb sab yog ib txwm 180 degrees. Lub kaum sab nrauv yog lub kaum sab xis ntawm ib sab ntawm ib qho duab, thiab ib txoj kab txuas ntxiv los ntawm sab tom ntej. Qhov sib npaug ntawm lub kaum sab nrauv thiab nws lub kaum sab hauv uas nyob ib sab kuj yog 180 degrees
Yuav ua li cas koj pom ob sab ntawm daim duab peb sab prism?
Qhov sib npaug ntawm ob qhov yooj yim tshaj plaws yog: ntim = 0.5 * b * h * ntev, qhov twg b yog qhov ntev ntawm lub hauv paus ntawm daim duab peb sab, h yog qhov siab ntawm daim duab peb sab thiab ntev yog prism ntev. cheeb tsam = ntev * (a + b + c) + (2 * base_area), qhov twg a, b, saib xyuas sab ntawm daim duab peb sab thiab base_area yog thaj tsam peb sab