Cov txheej txheem:
Video: Yuav ua li cas koj tsim ib tug perpendicular?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsim: ib kab los ntawm P perpendicular togivenline
- Cov kauj ruam:
- Muab koj lub ntsuas phoo rau ntawm P thiab viav vias ib qho arc ntawm txhua qhov loj uas hla kab ob zaug.
- Muab lub ntsuas ntsuas rau ntawm ib qho ntawm ob qhov chaw uas hla txoj kab thiab ua ib qho me me hauv qab kab (sab ntawm qhov P tsis nyob).
Ib yam li ntawd, koj ua li cas los tsim ib txoj kab perpendicular?
Ua ntej, muab qhov sib npaug ntawm cov kab Giveintoslope-intercept form los ntawm kev daws rau y. Koj tau y = 2 x + 5, y = 2. Perpendicular kab haveopposite-reciprocal slopes, yog li txoj kab nqes ntawm lub kab peb xav nrhiav yog 1/2. Txuas lub ntsiab lus muab rau hauv kab zauv y = 1/2x + b thiab daws rau b, peb tau ib = 6.
Tsis tas li ntawd, ua li cas koj thiaj paub tias cov kab yog parallel lossis perpendicular? Yog cov slopes yog tib yam thiab lawv-interceptsare txawv, cov kab yog parallel . Yog cov slopesare txawv, cov kab tsis yog thaum uas tig mus . Tsis zoo li kab sib npaug , kab perpendicular dointersect. Lawv kev sib tshuam ua rau txoj cai, lossis 90-degree, lub kaum sab xis.
Ua raws li qhov no hauv kev xav, dab tsi yog qhov piv txwv perpendicular?
Parallel kab yog kab hauv ib lub dav hlau uas ib txwm sib nrug deb. Parallel kab yeej tsis cuam tshuam. Perpendicular kab yog cov kab uas hla ntawm aright (90degrees) lub kaum sab xis.
Lub cim rau perpendicular yog dab tsi?
Cov lus ntawm cov cim hauv geometry:
| Cim | Cim npe | Lub ntsiab lus / txhais |
|---|---|---|
| ⊥ | perpendicular | kab perpendicular (90 ° kaum) |
| ∥ | thaum uas tig mus | kab sib npaug |
| ≅ | sib tham | sib npaug ntawm cov duab geometric thiab qhov loj me |
| ~ | zoo sib xws | tib cov duab, tsis loj loj |
Pom zoo:
Yuav ua li cas koj qhia yog hais tias ib tug khub ntawm ratios tsim ib tug proportions?
Sim xav seb puas yog ob qho piv txwv yog proportional? Yog tias lawv nyob hauv daim ntawv feem, muab lawv sib npaug rau ib leeg los kuaj seb lawv puas yog proportional. Hla multiply thiab simplify. Yog tias koj tau txais cov lus tseeb, ces qhov sib piv yog proportional
Yuav ua li cas yog qhov tshwm sim uas ib tug poj niam dig muag xim uas yuav ib tug txiv neej uas tsis pom kev zoo yuav muaj xim dig muag me nyuam?
Yog tias tus poj niam uas muaj lub zeem muag zoo li no (heterozygous rau qhov muag tsis pom xim) yuav ib tug txiv neej ib txwm muaj (XY), cov xeeb ceem hauv qab no tuaj yeem xav tau hauv F2 tiam: ntawm cov ntxhais, 50% yog ib txwm muaj thiab 50% yog cov neeg nqa khoom rau cov kab mob; ntawm cov tub, 50% yog xim dig muag thiab 50% yog qhov pom kev zoo
Yuav ua li cas yog ib tug piv txwv ntawm ib tug rational naj npawb uas tsis yog ib tug tag nrho?
Tus lej "rational" yog qhov piv ntawm ob tus lej. Piv txwv li, cov hauv qab no yog cov lej rational, thiab tsis muaj leej twg yog tus lej: 1 / 2. 2 / 3
Yuav ua li cas koj tsim ib tug sib npaug daim duab peb sab nrog ib tug compass?
Muab koj lub ntsuas ntsuas rau ntawm A thiab ntsuas qhov deb mus rau taw tes B. Hla ib qho arc ntawm qhov loj me saum toj no (lossis hauv qab) ntu. 2. Yog tsis hloov lub ncua sij hawm ntawm lub compass, tso lub compass point ntawm B thiab viav vias tib arc, intersecting nrog thawj arc
Yuav ua li cas ib tug geologist yuav qhia tau hais tias ib tug quav yog ib tug syncline thiab anti-line?
Geologic Structures (Part 5) Anticlines yog folds nyob rau hauv uas txhua ib nrab ntawm cov quav dips deb ntawm lub crest. Synclines yog folds nyob rau hauv uas txhua ib nrab ntawm cov quav dips mus rau lub trough ntawm lub quav. Koj tuaj yeem nco qab qhov sib txawv los ntawm kev ceeb toom tias anticlines tsim "A" zoo, thiab synclines tsim hauv qab ntawm "S."