2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Area of General Quadrilateral Formula=1/2 x diagonals length x (sum of the height of two triangles).
Tus qauv ntawm thaj tsam ntawm plaub fab ABCD yog dab tsi?
Los ntawm daim duab saum toj no, thaj tsam ntawm quadrilateral ABCD=thaj tsam ntawm ΔBCD + cheeb tsam ntawm ΔABD. luas luas ABCD=(1/2) × d × h1 h 1 + (1/2) × d × h2 h 2=(1/2) × d × (h1 + h2 h 1 + h 2).
Yuav ua li cas koj pom thaj tsam ntawm plaub plaub sab nrog 4 sab?
Piv txwv: Hauv ib lub voj voos kab pheeb ces kaum yog 42 cm thiab ob qhov perpendiculars ntawm nws los ntawm lwm qhov vertices yog 8 cm thiab 9 cm feem. Nrhiav thaj tsam ntawm lub quadrilateral. Luas=12 x 9 x 42 + 12 x 8 x 42=189 + 168=357 m².
Yuav ua li cas koj suav thaj tsam ntawm qhov tsis sib xws plaub ntug?
Txhawm rau nrhiav thaj tsam ntawm cov plaub hau tsis xwm yeem, ua raws li peb kauj ruam lub tswv yim:
- Faib cov plaub fab rau hauv ob daim duab peb sab los ntawm kev tsim ib kab pheeb ces kaum uas tsis cuam tshuam lub kaum sab hauv paub.
- Xaiv thaj tsam ntawm txhua daim duab peb sab, siv cov qauv.
- Ntxiv cov cheeb tsam ntawm ob daim duab peb sab.
Koj nrhiav thaj chaw li cas?
Yuav kom pom thaj tsam ntawm ib daim duab plaub, muab nws qhov siab los ntawm nws qhov dav. Rau ib lub square koj tsuas yog yuav tsum nrhiav qhov ntev ntawm ib sab (raws li txhua sab yog tib qhov ntev) thiab muab qhov no los ntawm nws tus kheej kom pom thaj tsam.
Pom zoo:
Puas yog plaub lub plaub fab puas muaj plaub lub kaum obtuse?
A quadrilateral tsis tuaj yeem muaj plaub lub kaum obtuse. Lub kaum sab xis yog qhov ntsuas siab dua 90 degrees thiab qis dua 180 degrees. Puas yog plaub fab muaj 4 lub kaum obtuse piav? A quadrilateral tsis tuaj yeem muaj plaub lub kaum obtuse.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Thaum qhov nruab nrab ntawm qhov chaw nyob ib sab ntawm lub plaub fab?
Lub plaub fab uas tsim los ntawm kev koom nrog cov midpoints sib law liag ntawm ib lub plaub fab uas nws kab pheeb ces kaum yog congruent yog a rhombus. Thaum qhov nruab nrab ntawm qhov chaw nyob ib sab ntawm plaub fab txuas nrog ntu?
Qhov twg yog qhov kev txiav txim siab rau kev tsis lees paub thiab rau kev ua kom muaj kev tawm tsam ntawm kev tawm tsam?
Kev qhuab ntuas tau siv los ntawm cov thawj coj loj hauv cov tub rog Romanrau txim rau cov koom haum lossis pab pawg loj ua txhaum cai, xws li kev ua phem, kev tawm tsam, kev tawm tsam, thiab kev tsis ncaj ncees, thiab rau lub pacification ntawm rebellious legions.
Formula rau thaj tsam ntawm polygons?
cheeb tsam ntawm ib tug tsis tu ncua polygon tsis tu ncua polygon Ib tug li niaj zaus hexagon yog txhais raws li a hexagon uas yog ob qho tib si equilateral thiab equiangular. … Los ntawm qhov no nws tuaj yeem pom tau tias daim duab peb sab nrog lub vertex nyob rau hauv nruab nrab ntawm qhov tsis tu ncua hexagon thiab sib koom ib sab nrog lub hexagon yog sib npaug, thiab tias cov hexagon li niaj zaus tuaj yeem muab faib ua rau rau ntawm daim duab peb sab sib npaug.
