Video: Puas yog ob kab pheeb ces kaum ntawm parallelogram sib npaug?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Thaum a parallelogram muab faib ua ob daim duab peb sab peb tau pom tias cov ces kaum thoob plaws sab hauv (ntawm no kab pheeb ces kaum ) yog sib npaug . Qhov no ua pov thawj tias cov kaum sab nraud ntawm a parallelogram kuj yog sib npaug . Cov diagonals ntawm parallelogram tsis yog ntawm sib npaug ntev.
Ib yam li ntawd, puas yog kab pheeb ces kaum ntawm parallelogram congruent?
Tag nrho cov khoom ntawm a parallelogram siv (cov uas tseem ceeb ntawm no yog cov sib npaug sab, sab nraud yog kev sib haum xeeb , thiab kab pheeb ces kaum sib pab). Tag nrho cov ces kaum yog kaum sab xis los ntawm kev txhais. Cov kab pheeb ces kaum yog kev sib haum xeeb.
Ib tug kuj yuav nug, vim li cas cov kab pheeb ces kaum ntawm parallelogram tsis sib haum? Cov diagonals ntawm parallelogram yog tsis yog sib npaug. Vim lub parallelogram muaj cov ces kaum nyob ib sab li mob thiab obtuse, lub kab pheeb ces kaum faib daim duab rau hauv 2 khub ntawm kev sib haum xeeb daim duab peb sab. Txij li cov ces kaum yog mob los yog obtuse, ob ntawm cov luv luv ntawm daim duab peb sab, ob qho tib si mob thiab obtuse yog kev sib haum xeeb.
Ib yam li ntawd, kab pheeb ces kaum ntawm parallelogram yog dab tsi?
Diagonal ntawm Parallelogram Formula A parallelogram yog ib lub quadrilateral uas nws opposite sab yog parallel thiab sib npaug. Cov sab nraud yog sib npaug thiab sib npaug, tsim cov kaum sib npaug ntawm cov sab nraud. Diagonals ntawm a parallelogram yog cov ntu uas txuas cov ces kaum ntawm daim duab.
Puas yog ob kab pheeb ces kaum ntawm ib daim duab plaub sib npaug Vim li cas?
Cov ob kab pheeb ces kaum yog congruent (ntev ntev). Txhua kab pheeb ces kaum bisects lwm. Hauv lwm lo lus, qhov point qhov twg kab pheeb ces kaum sib tshuam (hla), faib txhua kab pheeb ces kaum rau hauv ob sib npaug ntu. Txhua kab pheeb ces kaum faib cov duab plaub rau hauv ob congruent txoj cai triangles.
Pom zoo:
Dab tsi yog kab pheeb ces kaum ntawm Nonagon?
Ib tug nonagon, los yog enneagon, yog ib tug polygon nrog cuaj sab thiab cuaj vertices, thiab nws muaj 27 diagonals txawv.Cov mis rau kev txiav txim tus naj npawb ntawm diagonals ntawm ann-sided polygon yog n(n - 3)/2; Yog li, ib tug nonagon muaj 9(9 -3)/2 = 9(6)/2 = 54/2 = 27 diagonals
Puas yog cov kab pheeb ces kaum ib txwm sib sib zog nqus hauv ib qho parallelogram?
Nyob rau hauv ib qho parallelogram, cov kab pheeb ces kaum (kab txuas cov ces kaum sib txawv) sib sib zog nqus. Ntawd yog, txhua kab pheeb ces kaum txiav rau lwm qhov rau hauv ob qhov sib npaug. Nyob rau hauv daim duab saum toj no luag tej vertex los reshape lub parallelogram thiab convince koj tus kheej qhov no yog li ntawd
Puas yog kab pheeb ces kaum ntawm parallelogram bisect ib leeg ntawm 90?
Nyob rau hauv txhua lub rhombus, cov kab pheeb ces kaum (kab txuas cov ces kaum sib txawv) sib cais ntawm txoj cai kaum (90 °). Ntawd yog, txhua kab pheeb ces kaum txiav rau lwm qhov sib npaug, thiab lub kaum sab xis uas lawv hla yog ib txwm 90 degrees
Dab tsi parallelograms muaj kab pheeb ces kaum uas sib sib zog nqus?
Yog hais tias ob sab nyob ib sab ntawm ib tug parallelogram yog sib npaug, ces nws yog ib tug rhombus. Qhov kev sim no feem ntau coj los ua lub ntsiab lus ntawm rhombus. Lub quadrilateral uas nws diagonals bisect ib leeg ntawm txoj cai ces kaum yog rhombus
Yuav ua li cas koj ua pov thawj tias cov kab pheeb ces kaum ntawm lub rhombus bisect ib leeg?
Nyob rau hauv ib lub rhombus txhua sab yog sib npaug thiab opposite sab yog parallel. Ntxiv mus, lub rhombus kuj yog ib qho parallelgram thiab yog li nthuav tawm cov khoom ntawm parallelogram thiab cov kab pheeb ces kaum ntawm parallelogram bisect ib leeg