Reflecting Points to Reflect Figures

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Verkenning

GR. 6-8

Skill:

Locate, given the coordinates of, and graph plane figures which are the results of translations or reflections in all quadrants of the coordinate plane.

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Reflecting Points to Reflect Figures

Estimate the reflection of figures by reflecting one point at a time. Refine the estimate using a grid.

Putting It All Together

Answer these open ended questions on your own or with others to form deeper math connections.

Open vraag 1

When reflecting a shape across a line, what aspects of that shape’s sides or angles change? What parts stay the same?

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Open vraag 2

The segments that connect the corresponding points of a preimage and image, always seems to intersect the line of reflection.  Describe the special type of intersection that occurs.

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Open vraag 3

Observe the distance from a given point to the line of reflection.  Then, observe the distance from the corresponding reflected point to the line of reflection.  What do you notice about these distances?

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Open vraag 4

Did seeing a grid make a difference in finding the reflected image? Explain why or why not.

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