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Describing Line Reflections

Describing Line Reflections. Line Reflection. How do we draw a reflection of this image? What rules do we use to judge that we did it correctly? Same size, same shape (congruent) Each point is the same distance from the line of reflection.

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Describing Line Reflections

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  1. Describing Line Reflections

  2. Line Reflection • How do we draw a reflection of this image? • What rules do we use to judge that we did it correctly? • Same size, same shape (congruent) • Each point is the same distance from the line of reflection. • If you draw a line from point A to the new point a (written as A’), it would be perpendicular to the line of reflection.

  3. Line Reflection • The new image has the same letters but with an apostrophe after them. • We read A’ as “A prime” • We read B’ as “B prime” • We read C’ as “C prime”

  4. Transformations • Drawing the reflection image of a figure is one kind of transformation. • A transformation is a geometric operation that acts on the original figure and produces a copy of the figure in a new position. • We call the copy the image of the original figure.

  5. Tell whether the following is a reflection. If it is not, tell why.

  6. Tell whether the following is a reflection. If it is not, tell why.

  7. Tell whether the following is a reflection. If it is not, tell why.

  8. Tell whether the following is a reflection. If it is not, tell why.

  9. Tell whether the following is a reflection. If it is not, tell why.

  10. Tell whether the following is a reflection. If it is not, tell why.

  11. Tell whether the following is a reflection. If it is not, tell why.

  12. Tell whether the following is a reflection. If it is not, tell why.

  13. Time to practice Drawing Reflections 

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