Video: Dab tsi yog kab pheeb ces kaum ntawm Nonagon?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A tsis yog , los yog enneagon, yog ib tug polygon nrog cuaj sab thiab cuaj vertices, thiab nws muaj 27 txawv kab pheeb ces kaum . Lub mis rau kev txiav txim tus naj npawb ntawm kab pheeb ces kaum ntawm ann-sided polygon yog n(n - 3)/2; yog li no, a tsis yog luas = 9(9-3)/2 = 9(6)/2 = 54/2 = 27 kab pheeb ces kaum.
Ib yam li ib tug yuav nug, pes tsawg kab pheeb ces kaum puas muaj Nonagon?
Ntxiv mus, txij li txhua kab pheeb ces kaum txuas obvertices, peb xav tau coj ib nrab ntawm n(n-3) kom tshem tawm qhov rov ua dua ntawm kab pheeb ces kaum . Thaum kawg, tus qauv ua 0.5n(n-3). Tam sim no muab n los ua 9, tus naj npawb ntawm kab pheeb ces kaum hauv a tsis yog 0.5 * 9 * (9–3) = 27.
Tsis tas li ntawd, Nonagon yog dab tsi hauv lej? Tsis yog . ntau A 9-sided polygon (lub tiaj tus duab nrog ncaj sab). (tseem hu ua Enneagon) Saib: Polygon.
Thiab cov lus nug yog, dab tsi yog diagonal formula?
Diagonal Formula . Txhua square uas muaj ob kab pheeb ces kaum yog sib npaug ntawm qhov ntev rau ib leeg. DiagonalFormula yog siv los xam cov polygon kab pheeb ces kaum . Diagonals yog ib txoj kab koom nrog ob qhov tsis nyob ib sab ntawm apolygon piv txwv li a kab pheeb ces kaum koom nrog ob lub vertices ntawm ib lub polygon tsis suav nrog cov npoo ntawm daim duab.
Yuav ua li cas koj nrhiav tau diagonals?
Rau nrhiav tag nrho cov naj npawb ntawm kab pheeb ces kaum hauv apolygon, muab ntau tus lej ntawm kab pheeb ces kaum per vertex (n - 3) los ntawm tus naj npawb ntawm vertices, n, thiab faib los ntawm 2 (txawm li cas los xij txhua kab pheeb ces kaum suav ob zaug).
Pom zoo:
Puas yog ob kab pheeb ces kaum ntawm parallelogram sib npaug?
Thaum ib qho parallelogram muab faib ua ob daim duab peb sab peb tau pom tias cov ces kaum thoob plaws ib sab (ntawm no kab pheeb ces kaum) sib npaug. Qhov no ua pov thawj tias cov kaum sab xis nyob rau hauv parallelogram kuj sib npaug. Cov kab pheeb ces kaum ntawm parallelogram tsis yog qhov sib npaug
Puas yog cov kab pheeb ces kaum ib txwm sib sib zog nqus hauv ib qho parallelogram?
Nyob rau hauv ib qho parallelogram, cov kab pheeb ces kaum (kab txuas cov ces kaum sib txawv) sib sib zog nqus. Ntawd yog, txhua kab pheeb ces kaum txiav rau lwm qhov rau hauv ob qhov sib npaug. Nyob rau hauv daim duab saum toj no luag tej vertex los reshape lub parallelogram thiab convince koj tus kheej qhov no yog li ntawd
Puas yog kab pheeb ces kaum ntawm parallelogram bisect ib leeg ntawm 90?
Nyob rau hauv txhua lub rhombus, cov kab pheeb ces kaum (kab txuas cov ces kaum sib txawv) sib cais ntawm txoj cai kaum (90 °). Ntawd yog, txhua kab pheeb ces kaum txiav rau lwm qhov sib npaug, thiab lub kaum sab xis uas lawv hla yog ib txwm 90 degrees
Dab tsi parallelograms muaj kab pheeb ces kaum uas sib sib zog nqus?
Yog hais tias ob sab nyob ib sab ntawm ib tug parallelogram yog sib npaug, ces nws yog ib tug rhombus. Qhov kev sim no feem ntau coj los ua lub ntsiab lus ntawm rhombus. Lub quadrilateral uas nws diagonals bisect ib leeg ntawm txoj cai ces kaum yog rhombus
Yuav ua li cas koj ua pov thawj tias cov kab pheeb ces kaum ntawm lub rhombus bisect ib leeg?
Nyob rau hauv ib lub rhombus txhua sab yog sib npaug thiab opposite sab yog parallel. Ntxiv mus, lub rhombus kuj yog ib qho parallelgram thiab yog li nthuav tawm cov khoom ntawm parallelogram thiab cov kab pheeb ces kaum ntawm parallelogram bisect ib leeg