Qhov twg ntawm cov plaub hau plaub hau yog ib txwm plaub hau plaub hau?
Qhov twg ntawm cov plaub hau plaub hau yog ib txwm plaub hau plaub hau?

Video: Qhov twg ntawm cov plaub hau plaub hau yog ib txwm plaub hau plaub hau?

Video: Qhov twg ntawm cov plaub hau plaub hau yog ib txwm plaub hau plaub hau?
Video: qhia ua tshuaj zawv plaub hau 30/5/2022 2024, Kaum ib hlis
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Tsis tas li ntawd nug, qhov ntsuas ntawm ib lub quadrilateral tsis tu ncua yog dab tsi?

Yog, sab hauv lub kaum sab xis ntawm txhua lub ces kaum ntawm ib lub quadrilateral tsis tu ncua yog txhua 90 degrees (360 degrees / 4 fab). Sab nrauv lub kaum sab xis yooj yim los txiav txim; rho lub kaum sab hauv los ntawm tag nrho lub voj voog ntawm 360 (360 - 90), thiab koj tau txais: 270 degrees rau txhua lub kaum sab nrauv ntawm ib lub quadrilateral tsis tu ncua.

dab tsi tsis piav txog ib lub quadrilateral? A quadrilateral nrog cov kab rov tav kab sib dhos yog hu ua parallelogram. Yog tsuas yog ib khub ntawm opposite sab yog yuav tsum tau parallel, cov duab yog a trapezoid . A trapezoid , hauv cov tsis yog - parallel sab yog sib npaug ntawm qhov ntev, yog npe isosceles.

Ntawm no, dab tsi yog ib qho quadrilateral?

Quadrilateral . Hauv Euclidean dav hlau geometry, a quadrilateral yog ib tug polygon nrog plaub ntug (los yog sab) thiab plaub vertices los yog fab. Qee zaum, lo lus quadrangle yog siv, los ntawm kev sib piv nrog daim duab peb sab, thiab qee zaum tetragon rau kev sib xws nrog pentagon (5-sided), hexagon (6-sided) thiab lwm yam.

Puas yog rhombus ib lub quadrilateral tsis tu ncua?

IN rhombus txhua sab yog sib npaug tab sis cov ces kaum tsis sib npaug hauv txhua kis. yog li ntawd rhombus tsis yog a tsis tu ncua polygon. yog li tag nrho cov rhombuses tsis yog tsis tu ncua polygon tsuas yog ib qho rhombus (square) yog a tsis tu ncua polygon.

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