Video: Cov nqe lus twg ua pov thawj tias WXYZ yog daim duab sib npaug?
2024 Tus sau: Taylor Roberts | [email protected]. Kawg hloov kho: 2023-12-16 00:29
LUS TEB: Tsis yog; ob leeg ntawm ob sab sib txawv yuav tsum yog sib luag; txij li txoj kab nqes ntawm ≠ nqes hav ntawm, ABCD tsis yog parallelogram . nruab nrab point,. Txij li cov diagonals bisect ib leeg, WXYZ yog parallelogram.
Kuj paub, nqe lus twg ua pov thawj tias quadrilateral VWXY yog ib qho parallelogram?
triangles yog congruent. Yog hais tias ob khub ntawm ob sab sib npaug ntawm a quadrilateral yog sib xws, tom qab ntawd quadrilateral yog a parallelogram . Yog tias - AB ≅ - CD thiab - BC ≅ - DA, ces ABCD yog parallelogram . Yog tias ob khub ntawm cov ces kaum sib txawv ntawm a quadrilateral yog sib xws, tom qab ntawd quadrilateral yog a parallelogram.
Kuj Paub, qhov twg yuav tsum yog parallelogram? Ib quadrilateral Yuav tsum yog parallelogram yog hais tias nws muaj ib khub ntawm opposite sab ob qho tib si parallel thiab congruent. Ib quadrilateral Yuav tsum yog parallelogram yog hais tias nws muaj ob khub ntawm nws cov opposite ces kaum congruent (los yog sib npaug ntawm kev ntsuas). Ib quadrilateral Yuav tsum yog parallelogram yog hais tias nws muaj ob lub diagonals bisecting ib leeg.
Cov lus nug tseem yog, nqe lus twg muaj tseeb txog txhua qhov parallelograms?
Txhua plaub sab yog congruent. Txhua plaub lub ces kaum yog kaum sab xis. Cov diagonals sib sib zog nqus.
Koj ua pov thawj li cas rau plaub fab yog ib daim duab sib npaug ntawm daim duab?
Rau pov thawj tias nws yog a parallelogram , nco ntsoov tias lub ntsiab txhais ntawm a parallelogram yog a quadrilateral nrog ob khub ntawm ob sab sib luag. Yog li ntawd, ib qho txoj kev ua pov thawj nws yog ib parallelogram yog kom paub tseeb tias cov opposite sab yog parallel. Los ntawm algebra, nco ntsoov tias ob kab sib npaug yog tias lawv muaj tib txoj kab nqes.
Pom zoo:
Puas yog daim duab peb sab sib npaug?
Ib qho parallelogram yog plaub-sided, ob-dimensional zoo nyob rau hauv uas opposite sab yog parallel thiab muaj sib npaug ntev. Daim duab peb sab yog ib daim duab ob sab nrog peb sab thiab peb lub kaum ntse ntse. Txhawm rau nrhiav thaj tsam ntawm daim duab peb sab, peb muab ib nrab ntawm nws lub hauv paus muab faib los ntawm nws qhov siab
Vim li cas ib daim duab sib npaug nrog ib lub kaum sab xis yog duab plaub?
Tom qab ntawd ABCD yog ib qho parallelogram vim nws cov kab pheeb ces kaum sib sib zog nqus. Lub xwmfab ntawm txhua kab pheeb ces kaum yog qhov sib npaug ntawm cov xwmfab 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. Li no ABCD yog duab plaub, vim tias nws yog daim duab plaub nrog ib lub kaum sab xis
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