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https://www.youtube.com/watch?v=j1X_UIOvEwA

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https://www.youtube.com/watch?v=j1X_UIOvEwA

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1) You draw blueprints for a company that builds public buildings. You want to make sure that the building you've drawn is symmetrical, so you use a reflection over the middle of the paper to make sure it's the same on both sides.
2) A painter is painting a portrate of a person, so they use a reflection over the middle of the canvas to draw the other half of the person.

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1. You want to move your sofa from a top-down view next to the wall, so you move it as if it were on a 2D plane
2. A general needs to move his unit through a city. He directs them 500m down a street and then 250m up another to reach the rendezvous

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https://play.kahoot.it/#/k/0c55a523-ebf6-4d9f-b54c-1baf394f4746

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https://www.youtube.com/watch?v=4g5uRFzIYBM

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Learn how to draw the image of a given shape under a given rotation about the origin by any multiple of 90°.

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A rotation is a transformation in which an object is rotated about a fixed point. The direction of a rotation can be clockwise or counterclockwise.
EX. 1. 90 CCW (X,Y) —> (-Y,X) (3,1) —> (-1,3)
EX. 2. 180 (X,Y) —> (-X, -Y) (3,1)—> (-3,-1)

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When more than one transformation is used to move a shape on a coordinate grid.

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A reflection is a kind of transformation. It is basically a 'flip' of a shape over the line of reflection. Very often, reflections are performed using coordinate notation. The coordinates allow to easily describe the image and its pre-image.

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A translation is a transformation that leaves the points/shape in the same orientation while relocating it across a 2d plane by changing the values of the X and Y axes.