Video: Yuav ua li cas koj paub yog hais tias ib ntu yog congruent?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov seem tsuas yog kab ntu uas sib npaug ntawm qhov ntev. Kev sib haum xeeb txhais tias sib npaug. Kev sib haum xeeb kab ntu feem ntau yog qhia los ntawm kev kos tib tus nqi ntawm cov kab me me hauv nruab nrab ntawm cov ntu , perpendicular rau lub ntu . Peb qhia ib kab ntu los ntawm kos ib kab hla nws ob qhov kawg.
Ib yam li ntawd, tib neeg nug, ua li cas koj thiaj paub tias ib qho kev sib haum xeeb?
Ob daim duab peb sab yog concru yog lawv muaj: raws nraim tus tib peb sab thiab. raws nraim tus tib peb lub kaum sab xis.
Muaj tsib txoj hauv kev los nrhiav yog tias ob daim duab peb sab sib dhos: SSS, SAS, ASA, AAS thiab HL.
- SSS (sab, sab, sab)
- SAS (sab, kaum sab xis, sab)
- ASA (lub kaum sab xis, sab, kaum sab xis)
- AAS (lub kaum sab xis, sab, sab)
- HL (hypotenuse, ceg)
Ib yam li ntawd, koj ntsuas ib kab li cas? A kab ntu tsuas yog ib feem ntawm a kab . Yog koj xav tau ntsuas ntev a kab ntu , muab qhov kawg ntawm qhov ntu ntawm tus lej xoom ntawm tus kav. Ces saib qhov twg nws xaus. Nyob rau hauv nti puag ncig mus rau ze tshaj ¼, thiab nyob rau hauv centimeters ntsuas mus rau qhov ze tshaj centimeter.
Kuj paub, yog ib qho zoo sib xws rau nws tus kheej?
Cov cuab yeej reflexive ntawm kev sib haum xeeb qhia tau hais tias tej geometric daim duab yog congruent rau nws tus kheej . Ib kab ntu muaj tib qhov ntev, lub kaum sab xis muaj tib lub kaum sab xis ntsuas, thiab geometric daim duab muaj ib yam puab thiab loj li nws tus kheej . Cov duab tuaj yeem xav tias yog qhov kev xav ntawm nws tus kheej.
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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