Lesson Similarity

​Unit 3

Lesson 2: Similarity

​Symbol for similarity is ~

Two figures are similar if and only if one can be obtained from the other by a single or sequence of similarity transformations.​

​

Definition

The corresponding angles are congruent and the corresponding sides are proportional.

Important (fill in your packets):

.

Similarity transformations keep the same shape, but not necessarily the same size

​

​Mapping

​

Transformations

​

Similarity Transformations

​

​Isometric Transformations

​-Translation

-Reflection

-Rotation

- Dilation

- Stretch

​Writing Similarity Statements:

​Try in your packets!

Multiple Choice

What transformation is a similarity transformation, but a non-isometric transformation?

• Translation

• Reflection

• Rotation

• Dilation

Fill in the Blanks

Corresponding angles are

.

Fill in the Blanks

Corresponding sides are

.

​Make sure you know where to start - in this one were going from the small quad to the bigger quad.

​D2

​R180

​R90

​D0.6 or D2/3

​Big to small on this one.

This one is hard...

​Small to big

​D3

​T(8,0)

​Start WS #2!