Cov pentagons tsis muaj ob sab sib npaug. Ib yam li txhua tus polygon tsis tu ncua, mus ncig ib lub pentagon ua tiav ib lub voj voog tag nrho, yog li cov ces kaum sab nrauv pom los ntawm kev faib 360 ° los ntawm cov naj npawb ntawm sab, qhov no, 360 ° 5=72 ° 360 ° 5=72 °.
Pentagon muaj pes tsawg sab sib npaug?
Ib lub pentagon muaj tsib sab thiab tseem tsis muaj kab sib luag.
Pentagon puas muaj tsawg kawg yog ib qho piv txwv?
Ib lub pentagon tsis muaj ob sab sib luag. Lub pentagon muaj 5 sab, muab peb lub ces kaum rov qab ib sab es tsis yog ob qho tib si.
Dab tsi yog cov duab sib npaug?
Cov duab sib npaug yog tias lawv muaj kab uas ib txwm nyob deb ntawm ib leeg thiab yuav tsis sib tshuam lossis kov. Qee cov duab uas muaj ob sab sib npaug suav nrogparallelogram, daim duab plaub, square, trapezoid, hexagon, thiab octagon. Lub trapezoid muaj ib khub ntawm qhov sib npaug.
Puas muaj pes tsawg sab yog pentagons?
Hauv geometry, lub pentagon (los ntawm Greek πέντε pente lub ntsiab lus tsib thiab γωνία gonia lub ntsiab lus lub kaum) yog ib qho tsib-sided polygon lossis 5-gon. Cov lej ntawm cov kaum sab hauv hauv ib qho yooj yim pentagon yog 540 °. Lub pentagon tej zaum yuav yooj yim los yog kev sib tshuam ntawm tus kheej. Ib tus kheej-kev sib tshuam tsis tu ncua pentagon (los yog lub hnub qub pentagon) hu ua pentagram.
