Vim li cas segments thiaj sib haum?
Vim li cas segments thiaj sib haum?

Video: Vim li cas segments thiaj sib haum?

Video: Vim li cas segments thiaj sib haum?
Video: Vim li cas tus ntseeg hos yuav tsum raug kev sim siab 2024, Kaum ib hlis
Anonim

Kab ntu yog kev sib haum xeeb yog tias lawv muaj qhov ntev. Txawm li cas los xij, lawv yuav tsum tsis txhob sib npaug. Lawv tuaj yeem nyob ntawm txhua lub kaum sab xis lossis kev taw qhia ntawm lub dav hlau. Koj tuaj yeem hais tias "qhov ntev ntawm kab AB sib npaug rau qhov ntev ntawm kab PQ".

Nyob rau hauv tas li ntawd, dab tsi yog congruent segments?

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 . Qhov tseem ceeb yog tias lawv sib npaug, lossis kev sib haum xeeb.

Qhov thib ob, nws txhais li cas thaum cov ces kaum sib haum? Tib cov duab thiab qhov loj me, tab sis peb tso cai rau tig, swb lossis tig. Hauv qhov piv txwv no cov duab yog kev sib haum xeeb (koj tsuas yog yuav tsum tig ib sab thiab txav nws me ntsis). Angles yog congruent thaum lawv loj tib yam (hauv degrees lossis radians). Sab yog kev sib haum xeeb thaum lawv yog tib qhov ntev.

Hais txog qhov no, cov kab sib txuas puas tuaj yeem cuam tshuam?

Thaum ob kab sib tshuam Lawv tsim ob khub ntawm lub kaum sab xis, A + C thiab B + D. Lwm lo lus rau lub kaum sab xis yog cov kaum sab xis. Vertical angles yeej ib txwm kev sib haum xeeb , uas txhais tau hais tias lawv sib npaug.

Yuav ua li cas koj tsim congruent segments?

Ua raws li cov kauj ruam no rau kev sib haum xeeb Kev tsim kho: 1) Siv cov SEGMENT TOOL, ua a ntu CD ntawm txhua qhov ntev 2) Siv lub COMPASS TOOL, tsim lub voj voog nrog lub vojvoog AB thiab qhov chaw nruab nrab C 3) Siv lub POINT TOOL, khij qhov kev sib tshuam ntawm lub voj voog C thiab ntu CD TSIS TAU: Kev sib haum xeeb lub voj voog muaj tib lub vojvoog.

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