Yuav ua li cas lwm txoj hauv kev rau npe lub dav hlau?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Lwm yam npe rau dav hlau Ib yog dav hlau BCD thiab dav hlau CDE. b. Cov ntsiab lus C, E, thiab D nyob ntawm tib kab, yog li lawv yog collinear. Cov ntsiab lus B, C, E, thiab D yog tib yam dav hlau , yog li lawv yog coplanar.

Ua raws li qhov xav tau, koj ua li cas lub npe dav hlau hauv geometry?

A dav hlau extends infinitely nyob rau hauv ob qhov ntev. Nws tsis muaj thickness. Ib qho piv txwv ntawm a dav hlau yog ib qho kev sib koom tes dav hlau . A dav hlau yog lub npe los ntawm peb lub ntsiab lus hauv dav hlau uas tsis nyob rau tib kab.

Kuj Paub, kab kab perpendicular yog dab tsi? Hauv elementary geometry, cov cuab yeej ntawm kev ua perpendicular (perpendicularity) yog kev sib raug zoo ntawm ob kab uas sib ntsib ntawm lub kaum sab xis (90 degrees). A kab yog hais tias yog perpendicular rau lwm tus kab yog ob tug kab sib tshuam ntawm lub kaum sab xis.

Ib yam li ntawd, ob txoj hauv kev rau npe rs yog dab tsi?

SR ROL Rã Q R SR Qs să line l 4 P. V1 N.

Koj puas tuaj yeem sau lub dav hlau nrog plaub lub ntsiab lus?

9. Lub npe collinear thiab coplanar cov ntsiab lus Collinear cov ntsiab lus yog ob lossis peb cov ntsiab lus ntawm tib kab. Collinear cov ntsiab lus A, B, C thiab cov ntsiab lus D, B, E Fig. 2 A B C Coplanar cov ntsiab lus yog plaub los yog ntau dua taw tes rau taw tes ntawm tib yam dav hlau.