Rotation About a Point Other Than Origin by 180 degrees

[@deacondank6249]

Thank you for helping me. My math teacher is terrible so I have to rely on homework to learn everything I need to know.

[@MathematicsTutor]

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This video helped so much. Explained my teachers 2 hour class in 5 minutes. Thank you!

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7 years ago, still more helpful than my maths teacher

[@MathematicsTutor]

Thanks for appreciation. Here is related Playlist: th-cam.com/video/UZ19ojOXRG0/w-d-xo.html

[@clairelogstrom812]

This was very helpful! My math teacher didn't explain this at all but now I understand it completely!

[@MathematicsTutor]

Also watch: th-cam.com/video/6U0GcPY1qDU/w-d-xo.html
Last part is rotation by 90 about external point
Thanks

[@ujfujshtzaphorah3318]

This was four years ago but thank you for this video! Greatly appreciated!

[@m2k2n2d]

Thank you so much!!! You just saved me from getting a B on a Math quiz!

[@MathematicsTutor]

Thanks a lot for your time and appreciation.
Feel free to post questions, whenever needed.
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Thank you this helped alot

[@MathematicsTutor]

Thanks. Related Video: th-cam.com/video/UZ19ojOXRG0/w-d-xo.html

[@naodhaile6587]

I am grade 7️⃣ yesterday I had a test I wasn't know how to do a rotation but when I see this video I know how to do a rotation thanks very much God bless you 🙏🙏🙏.

[@MathematicsTutor]

Thanks. Here is 90 degree rotation: th-cam.com/video/ScwxoPqhTG4/w-d-xo.html

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Thanks too

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Thank you sooooooo much!!!!! I needed this video. My geometry teacher sucks and u made my day!!!! Thanks !!!!!!

[@MathematicsTutor]

Thanks for your time and appreciation.
Here is another related example: th-cam.com/video/ScwxoPqhTG4/w-d-xo.html
Feel free to post questions as I can provide the solution in a day or two
Thanks

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thank you so much, im doing online classes now and i didnt get this at all, but with your video i understood everything! thank you! 😩🙏

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Thank you so much for the video. It really helped

[@melaninsunshine1337]

This was sooooo helpful!! Thank you for taking time out to make this!

[@bullynoir1207]

Hey thanks so much
This quarantine homework was stressing me out 😢

[@huyanhle]

Rotation of a point or a graph -90/+90 degree or 180 degree at any center point without needing to draw any graph.
Formula 1: Rotation of a graph 90 degree anti-clockwise (or counter-clockwise) about origin (0,0)
(X, Y) ==> (-Y, X)
Formua 2: Rotation of a graph 90 degree clockwise (or 270 degree clockwise) about origin (0,0)
(X, Y) ==> (Y, -X)
Formula 3: Rotation of a graph 180 degree anti-clockwise (or counter-clockwise) about origin (0,0)
(X, Y) ==> (-X, -Y)
To do mathematical calculation you need to do 3 following steps.
(Note: (Xp , Yp) is the name of center-point of rotaion of the graph, (not X*p, Y*p))
Step 1: Move/Shift the graph to origin (0,0)
(X - Xp, Y - Yp) Formula 4
(Xp and Yp are just names (not X*p, Y*p))
Step 2: Use according Formula 1, 2 or 3 for rotational graph -90 degree, 90 degree or 180 dregree to rotationally solve the this step
Step 3: Move/Shift the graph back to the rotaional center-point with formula below
(X + Xp, Y + Yp) Formula 5
(Xp and Yp are just names (not X*p, Y*p))
=============
I am using example in this video clip to mathematically solve the method above
Example: Rotate the triangle graph of points A(-3,-1), B(-1,2) and C(2,-2) 180 degree clockwise about the center-point P(Xp, Yp) = (-1, -1)
Solve:
Step 1: Move/Shift the graph to origin (0,0)
(X - Xp, Y - Yp)
A(-3,-1) ==> Ao(-3 + 1, -1 +1) (Ao is just a name (not A*o))
= Ao(-2, 0)
B(-1,2) ==> Bo(-1 +1, 2+1)
= Bo(0, 3) (Bo is just a name (not B*o))
C(2,-2) ==> Co(2 + 1, 2 +1)
= Co(3, 3) (Co is just a name (not C*o))
Step 2: Use according Formulae 1, 2 or 3 for rotational graph -90 degree, 90 degree or 180 dregree to rotationally solve the this step.
In this step, the question says rotate 180 degree clockwise. Hence, we use "Formula 3"
That is (X, Y) ==> (-X, -Y)
Ao(-2, 0) ==> A'(2, 0)
Bo(0, 3) ==> B'(0, -3)
Co(3, 3) ==> C'(-3,-3)
Step 3: Move/Shift the graph back to the rotaional center-point with formula below
(X + Xp, Y + Yp)
A'(2, 0) ==> A''( 2 - 1, 0 - 1)
= A''(1, -1)
B'(0, -3) ==> B''(0 - 1, -3 -1)
= B''(-1, -4)
C'(-3, -3) ==> C''(-3 - 1, -3 - 1)
= C''(-4, -4)

[@dattebayo2000]

Thanks bro

[@huyanhle]

@@dattebayo2000 copy, paste, save and pass on for future as it is not written or taught at school.
If a programmer, can use it to write a program code to calculate and draw very quick too

[@jiteshkhatri20]

Beautiful handwriting and lovely explanation sir.

[@poojashock]

very helpful

[@nasreenabdool135]

Finally something that makes sense!

[@MathematicsTutor]

Thanks

[@nasreenabdool135]

Anil Kumar Can you help me with something please?
I have to transform a shape by first reflecting it in the line y=-x, then rotating it 90° clockwise about point (3,-2).
I have first reflected the.object by drawing the mirror line and interchanging the places and negating the coords of each point of the object.
However the answer i have come up.with is not the same as the one in the answer sheet. Did i do something wrong?

[@waniasiddique9346]

I cant understand it but now its clear thanks.

[@quinamasarira2116]

thank u kind sir, currently doing homeschooling so helpful

[@pako2029]

🙏 thank you 🙏

[@eceozhan8772]

Very helpful video! Helped me with my exam

[@poojatrivedi3013]

Very good Explaination

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thank you thank you thank you thank you thank you

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Very helpful video Thanku

[@lebohangpatiencemabasa5452]

❤

[@MathematicsTutor]

Thanks for appreciation

[@MathematicsTutor]

Thanks Video for you: th-cam.com/video/6U0GcPY1qDU/w-d-xo.html

[@naodhaile6587]

Can you make a video how to find the center of a circle

[@bartoszwinnicki591]

thank you. this is fantastic explanation

[@samirkurudi8125]

Thnks Mr. Kumar this helped

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Thank u so much, u help me a lot .🥺👌🏻

[@firdows...]

It's very beneficial

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Thank you so much

[@MathematicsTutor]

My pleasure. Thanks for appreciation.
All the best

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Very very helpful!!!

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thank you this helped!

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tysm!

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Nice video, you deserve 1000m sub

[@tafadzwanyazorwe3671]

You are awesome

[@rashaatteya9462]

thank you man you are the best

[@kavelmanglik1502]

so we can apply the same method for rotation about 90 degrees clockwise and anticlockwise?

[@luciidyt]

thanks

[@yashalsiddiquivlogs2461]

thank youuuuuu

[@halafares333]

Is there a rule

[@halafares333]

Wht if it was 270

[@joydip3647]

Hindi aty nahe ky

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hi

[@MathematicsTutor]

Related video: th-cam.com/video/WPT4odPFecA/w-d-xo.html

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sorry didnt quite understand it

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Worst presentation where the content you are printing the matter please check

[@joydip3647]

Bideshi ho gy tum

[@geethasammeta2880]

Thank you so much