Hauv geometry, ib qho decagon (los ntawm Greek δέκα déka thiab γωνία gonía, "kaum kaum") yog kaum-sided polygon lossis 10-gon. Tag nrho cov lej ntawm cov kaum sab hauv ntawm ib qho yooj yim decagon yog 1440 °.
Puas muaj 11 sab polygon?
In geometry, a hendecagon (kuj undecagon lossis endecagon) lossis 11-gon yog kaum ib-sab polygon. (Lub npe hendecagon, los ntawm Greek hendeka " kaum ib" thiab -gon "kab", feem ntau nyiam rau cov hybrid undecagon, uas thawj feem yog tsim los ntawm Latin undecim " kaum ib ")
Dab tsi yog Tensided polygon?
Teb: A 10 sided polygon hu ua a decagon . Lo lus Greek 'Polygon' muaj ntau lub ntsiab lus 'ntau' thiab gon lub ntsiab lus 'angle. ' Piav: Ib tug decagon yog kaum-sided polygon nrog kaum vertices thiab kaum lub ces kaum.
lub npe ntawm 11 thiab 12 sab polygon yog dab tsi?
∴ 11 sided thiab 12 sided polygons hu ua Hendecagon thiab Dodecagonfeem.
Puas muaj 10 sab polygon muaj pes tsawg?
A decagon is a 10-sided polygon, nrog 10 lub kaum sab hauv, thiab 10 vertices uas yog qhov chaw sib ntsib. Lub decagon tsis tu ncua muaj 10 qhov sib npaug-ntev sab thiab sib npaug- ntsuas sab hauv cov ces kaum. Txhua lub kaum sab xis ntsuas 144 ° thiab lawv tag nrho ntxiv txog 1, 440 °. Lub decagon irregular muaj ob sab thiab cov ces kaum uas tsis yog txhua yam sib npaug los yog congruent.
