Video: Dab tsi yog qhov tsis sib haum xeeb?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
ob sab, thiab tsis sib haum txhais tau tias tsis yog kev sib haum xeeb ,”uas yog, tsis zoo ib yam. (Cov duab uas muaj kev cuam tshuam thiab tig thiab txhais cov ntawv luam ntawm ib leeg yog kev sib haum xeeb shapes.) Nws tsis yog ib qho tshiab tsis yog - kev sib haum xeeb daim duab peb sab.
Tib neeg kuj nug, dab tsi tsis sib haum?
yog Tsis sib haum rau: vim hais tias, txawm tias tag nrho cov ces kaum sib phim, ib qho loj dua lwm qhov. Yog li ntawd tsuas muaj tib lub kaum sab xis tsis muaj lav lawv yog kev sib haum xeeb.
Tsis tas li ntawd, dab tsi yog qhov cim ntawm kev tsis sib haum xeeb? Cov lus ntawm cov cim hauv geometry:
| Cim | Cim npe | Lub ntsiab lus / txhais |
|---|---|---|
| ≅ | sib tham | sib npaug ntawm cov duab geometric thiab qhov loj me |
| ~ | zoo sib xws | tib cov duab, tsis loj loj |
| Δ | daim duab peb sab | daim duab peb sab |
| |x-y| | nyob deb | nrug ntawm cov ntsiab lus x thiab y |
Qhov yooj yim li, dab tsi yog qhov tsis sib haum xeeb parallelogram?
Yog plaub sab ua tsis yog txuas ntawm lawv qhov kawg, koj ua tsis yog muaj qhov kaw zoo; tsis muaj parallelogram ! Yog tias ib sab ntev dua nws sab nraud, koj ua tsis yog muaj qhov sib npaug; tsis muaj parallelogram ! Yog hais tias tsuas yog ib txheej ntawm opposite sab kev sib haum xeeb , koj ua tsis yog muaj a parallelogram , koj muaj ib tug trapezoid.
Nws txhais li cas kom muaj kev sib haum xeeb?
Kev sib haum xeeb . Angles yog kev sib haum xeeb thaum lawv loj tib yam (hauv degrees lossis radians). Sab yog kev sib haum xeeb thaum lawv yog tib qhov ntev.
Pom zoo:
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