Cov txheej txheem:
Video: Koj ua pov thawj tias cov ces kaum sib npaug li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tom qab ntawd, peb tau ua pov thawj cov theorems uas muaj feem rau cov ces kaum:
- Vertical opposite cov ces kaum sib npaug .
- Hloov sab nrauv cov ces kaum sib npaug .
- Hloov sab hauv cov ces kaum sib npaug .
- Qhov loj ntawm sab hauv lub kaum sab xis ntawm tib yam sab ntawm lub transversal yog 180 degrees.
Yog li ntawd, lub kaum sab xis yog congruent?
Cov Angles muaj ib yam lub kaum sab xis (hauv degrees lossis radians). Qhov ntawd yog tag nrho. Cov no cov ces kaum yog congruent . Lawv tsis tas yuav taw tes rau tib qho kev taw qhia.
Ib tug kuj yuav nug, ob lub kaum sab xis twg yog qhov sib haum? Ob lub kaum sab xis yog qhov sib npaug yog lawv muaj kev ntsuas tib yam. Ob lub voj voog yog kev sib haum xeeb yog lawv muaj tib txoj kab uas hla.
Hais txog qhov no, cov kab sib txuas puas sib haum?
Yog ob kab sib npaug yog txiav los ntawm ib tug transversal, cov ces kaum sib raug kev sib haum xeeb . Yog ob kab yog txiav los ntawm ib tug transversal thiab cov ces kaum sib raug kev sib haum xeeb , cov kab yog parallel . Sab hauv Angles ntawm Tib Sab ntawm Transversal: Lub npe yog ib qho kev piav qhia ntawm "qhov chaw" ntawm cov ces kaum no.
Dab tsi yog cov ces kaum ntxiv?
Lub kaum sab xis ntxiv . Ob Lub kaum sab xis yog Ntxiv thaum lawv nce mus txog 180 degrees. Ob tug no lub kaum sab xis (140 ° thiab 40 °) yog Lub kaum sab xis ntxiv , vim lawv ntxiv txog 180 °: Daim ntawv ceeb toom tias ua ke lawv ua lub kaum sab xis.
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Koj ua pov thawj li cas cov kab yog sib npaug hauv cov ntawv pov thawj?
Thawj yog yog tias cov ces kaum sib thooj, cov ces kaum uas nyob rau tib lub ces kaum ntawm txhua qhov kev sib tshuam, sib npaug, ces cov kab sib npaug. Qhov thib ob yog yog tias qhov sib txawv sab hauv lub kaum sab xis, cov ces kaum uas nyob rau sab nraud ntawm lub transversal thiab sab hauv cov kab sib npaug, sib npaug, ces cov kab sib npaug
Dab tsi pov thawj siv cov duab ntawm lub dav hlau sib koom ua pov thawj cov khoom geometric?
Cov ntaub ntawv pov thawj uas siv cov duab ntawm lub dav hlau sib koom ua pov thawj geometric zog yog hu ua trigonometric
Koj ua pov thawj li cas ntawm cov ces kaum sab nrauv ntawm daim duab peb sab yog 360?
Lub kaum sab nrauv ntawm daim duab peb sab yog sib npaug rau qhov sib npaug ntawm cov kaum sab hauv sab nraud. Yog xav paub ntxiv txog qhov no saib Daim duab peb sab sab nraud lub kaum sab xis theorem. Yog tias lub kaum sib npaug raug coj los ntawm txhua qhov vertex, cov ces kaum sab nrauv ib txwm ntxiv rau 360 ° Qhov tseeb, qhov no muaj tseeb rau txhua qhov convex polygon, tsis yog daim duab peb sab
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no