Cov txheej txheem:
Video: Dab tsi yog cov lus ntxeev sab ntawm daim duab plaub?
2024 Tus sau: Taylor Roberts | [email protected]. Kawg hloov kho: 2023-12-16 00:29
Hauv Euclidean geometry , a parallelogram yog ib qho yooj yim (tsis-tus kheej-kev sib tshuam) quadrilateral nrog ob khub ntawm parallel sab . Cov rov qab los yog ntsib ob sab ntawm daim duab plaub yog qhov ntev sib npaug thiab opposite kaum ntawm parallelogram yog qhov ntsuas sib npaug.
Yooj yim li ntawd, koj yuav pom cov lus sib thooj ntawm daim duab sib dhos li cas?
Muaj rau yam khoom tseem ceeb ntawm cov duab sib dhos kom paub:
- Cov sab nraud yog congruent (AB = DC).
- Cov tim tswv sib txawv yog sib haum (D = B).
- Cov ces kaum sib ntxiv yog ntxiv (A + D = 180 °).
- Yog tias ib lub kaum sab xis yog qhov zoo, ces txhua lub ces kaum yog txoj cai.
- Lub diagonals ntawm ib tug parallelogram bisect ib leeg.
Tsis tas li ntawd, 4 yam khoom ntawm parallelogram yog dab tsi? Parallelogram muaj cov khoom hauv qab no:
- Ob sab sib tw yog qhov sib thooj los ntawm kev txhais.
- Cov sab nraud yog congruent.
- Lub kaum ntse ntse sib txawv yog sib xws.
- Cov kaum sib law liag yog ntxiv.
- Cov diagonals sib sib zog nqus.
Nyob rau hauv kev hwm rau qhov no, puas yog opposite sab ntawm lub parallelogram congruent?
Lub quadrilateral yog ib parallelogram yog: Los yog: Ob khub ntawm ob sab yog kev sib haum xeeb . Yog lawv kev sib haum xeeb , lawv kuj yuav tsum yog parallel.
Dab tsi yog cov yam ntxwv ntawm parallelogram?
Convex ntau yam
Pom zoo:
Dab tsi ua rau cov zaj duab xis muaj roj nyob sab hauv ntawm daim iav?
Oily zaj duab xis ntawm sab hauv daim iav. Feem ntau koj tuaj yeem hnov ntxhiab tsw yog tias nws yog lub tshuab rhaub. Tsis tas li, yog tias nws yog, qhov xau yuav kawg zuj zus
Daim duab peb sab txiv kab ntxwv xim kos npe rau sab nraum qab ntawm lub tsheb qeeb qeeb qhia li cas?
Daim npav tsheb qeeb qeeb yog daim duab peb sab txiv kab ntxwv cuam tshuam nrog liab uas ceeb toom rau lwm tus neeg siv txoj hauv kev tias lub tsheb uas pom daim paib tab tom taug kev qeeb dua li ib txwm khiav ceev
Dab tsi yuav tsum yog daim duab plaub?
Lub quadrilateral YUAV TSUM yog ib qho parallelogram yog tias nws muaj ob khub ntawm nws qhov kev sib tw sab nraud (lossis sib npaug hauv kev ntsuas). Lub quadrilateral yuav tsum yog ib qho parallelogram yog tias nws muaj ob khub ntawm nws cov kaum sab xis sib npaug (lossis sib npaug hauv kev ntsuas). Lub quadrilateral yuav tsum yog ib qho parallelogram yog tias nws muaj ob kab pheeb ces kaum bisecting ib leeg
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
Cov lus ntawm Monroe Lus Qhuab Qhia yog dab tsi?
Monroe Lus Qhuab Qhia yog qhov paub zoo tshaj plaws hauv Asmeskas txoj cai mus rau Sab Hnub Poob Ntiaj Teb. Faus nyob rau hauv cov lus ib xyoos ib txwm xa mus rau Congress los ntawm Thawj Tswj Hwm James Monroe thaum Lub Kaum Ob Hlis 1823, cov lus qhuab qhia ceeb toom rau cov tebchaws nyob sab Europe tias Tebchaws Meskas yuav tsis tso siab rau kev ua tub rog ntxiv lossis cov menyuam roj hmab huab tais