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Koj sau txoj cai tswj kev sib hloov li cas?
Koj sau txoj cai tswj kev sib hloov li cas?

Video: Koj sau txoj cai tswj kev sib hloov li cas?

Video: Koj sau txoj cai tswj kev sib hloov li cas?
Video: KEV NTSEEG VAJ TSWV THIAB COJ QUB KEV CAI 05.12.22 2024, Kaum ib hlis
Anonim

Rau sau ib txoj cai rau qhov no kev sib hloov koj yuav sau r270: ua. (x, y) = (-y, x). Lus cim Txoj cai Ib qho cim txoj cai muaj daim ntawv nram qab no R180? A → O = R180? (x, y) → (−x, −y) thiab qhia koj tias daim duab A tau ua tig hais txog lub hauv paus thiab ob qho tib si x- thiab y- ua haujlwm tau muab faib ua -1.

Yog li ntawd, dab tsi yog txoj cai tswj kev sib hloov?

Cov ntsiab lus hauv cov teeb no (8)

  • x-axis Reflection. (x, y) -> (x, -y)
  • y-axis Reflection. (x, y) -> (-x, y)
  • y = x Reflections. (x, y) -> (y, x)
  • y=-x Reflections. (x, y) -> (-y, -x)
  • 90 degree kev sib hloov. (x, y) -> (-y, x)
  • 180 degree tig. (x, y) -> (-x, -y)
  • 270 degree tig. (x, y) -> (y, -x)
  • Tus kheej / 360 degree tig. (x, y) -> (x, y)

koj rotate coordinates li cas? Cov kauj ruam

  1. Nco ntsoov qhov sib thooj clockwise thiab counterclockwise rotations. Tig ib tug duab 90 degrees yog tib yam li tig nws 270 degrees clockwise.
  2. Nrhiav qhov chaw nyob ntawm qhov qub vertices.
  3. Teem lub qauv rau tig ib tug duab 90 degrees.
  4. Txuas cov coordinates rau hauv cov qauv.
  5. Kos cov duab tshiab.

Ua raws li qhov no saib, txoj cai tswj kev tswj hwm yog dab tsi?

Transformations nyob rau hauv lub koom tes dav hlau feem ntau sawv cev los ntawm " tswj cov cai " ntawm daim ntawv (x, y) (x', y'). ua haujlwm yog (x, y) tau mapped rau lwm lub ntsiab lus uas nws ua haujlwm yog (x', y').

Dab tsi yog txoj cai tswjfwm rau kev sib hloov 180?

Cov kev cai rau lwm qhov kev sib hloov ntawm kev sib hloov yog: Rau 180 qib , txoj cai yog (x, y) ------ (-x, -y) Rau 270 qib , txoj cai yog (x, y) ------ (y, -x)

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