Page 68 - Math Course 2 (Book 2)

Transformations in Geometry
Mo. 9

Lesson 1 image
Every corresponding point on the figure after a
transformation is called its image.

KEY CONCEPTS: Original point

1. Draw translations on a coordinate plane. before
transformation
2. Draw reflections and dilations on a
coordinate plane. Image

(the points after
transformation)

MO. 9 - L1a
translation
Transformations: Translations In a translation, you slide a figure from one
position to another without turning.

Vocabulary A-Z

Let us learn some vocabulary

transformation
A mapping of a geometric figure that may
change its shape or position is a transformation.
Transformations in geometry include: translation,
reflection, rotation, glide.

Turn! Flip! Concept Summary

Transformation

Translations and Reflections produce images
that are the same shape and the same size. The
figures are congruent to the images.

Dilations produce images that are similar (same
shape, but not the same size). The figures are not
Rotation Reflection congruent to the images, except when the scale
Slide! factor k = 1.

Translation

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