Vim li cas ib daim duab sib npaug nrog ib lub kaum sab xis yog duab plaub?

2024 Tus sau: Taylor Roberts | [email protected]. Kawg hloov kho: 2023-12-16 00:29

Tom qab ntawd ABCD yog a parallelogram vim nws diagonals bisect ib leeg. Lub square ntawm txhua kab pheeb ces kaum yog qhov sib npaug ntawm cov squares ntawm ob sab uas nyob ib sab. Txij li cov sab nraud yog sib npaug ntawm qhov ntev, cov squares ntawm ob lub diagonals yog tib yam. Yog li ABCD yog duab plaub , vim nws yog a parallelogram nrog ib lub kaum sab xis.

Ntawm no, dab tsi yog daim duab plaub nrog ib lub kaum sab xis?

A parallelogram nrog ib lub kaum sab xis yog a parallelogram nrog 4 txoj cai cov ces kaum, tseem hu ua duab plaub. Txhua khub ntawm ob sab sib npaug ntev yuav tsum nyob ib sab. Txhua yam koj paub yog daim duab muaj plaub sab. Yog li ntawd, nws yog dav dav plaub fab.

Ib qho ntxiv, cov duab sib piv puas muaj lub kaum sab xis? Txoj Cai hauv Parallelograms Hauv ib parallelogram , yog tias ib yam ntawm cov lub kaum sab xis yog a txoj cai kaum , cwb 4 lub kaum sab xis yuav tsum yog txoj cai kaum . Yog ib daim duab plaub sab muaj ib sab xis thiab tsawg kawg yog ib qho lub kaum sab xis ntawm qhov ntsuas sib txawv, nws tsis yog a parallelogram ; nws yog trapezoid.

Tsis tas li ntawd, ib qho parallelogram puas muaj cov kaum sab xis thiab vim li cas?

A parallelogram muaj ob txoj kab sib luag ntawm ob sab. Ib daim duab plaub muaj ob khub ntawm ob sab sib luag, thiab plaub txoj cai kaum . Nws kuj yog ib qho parallelogram , vim nws muaj ob khub ntawm parallel sab. Tsis yog, vim a rhombus ua tsis yog muaj rau muaj 4 txoj cai kaum.

Vim li cas ib lub duab plaub yog ib daim duab sib npaug?

A duab plaub suav hais tias yog ib rooj plaub tshwj xeeb ntawm a parallelogram vim: a parallelogram yog plaub fab plaub fab nrog 2 khub ntawm qhov rov qab, sib npaug thiab ob sab sib luag. A duab plaub yog quadrilateral nrog 2 khub ntawm qhov sib npaug, sib npaug thiab sib npaug sab tab sis tseem tsim cov kaum sab xis ntawm sab uas nyob ib sab.