9.1 Translations Brett Solberg AHS ‘11-’12.

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Presentation transcript:

9.1 Translations Brett Solberg AHS ‘11-’12

Today’s Agenda Test Review Transformations Translations preimage image isometry

Test Review 5th 6th Retake Options Average 36/47 = 77% High 50/47

Transformers Identify the 4 transformers

Transformation The transformation of a geometric figure is a change in its position, shape, or size.

Transformation The original figure is the preimage The resulting figure is an image. An isometry is a transformation where the preimage and image are congruent. Preimage Image

Isometry Would the following transformations be considered an isometry?

Preimage/Image List corresponding sides and angles.

Translation An isometry which slides all points the same distance.

Composition A combination of transformations.

Writing a Rule A→B

Translation Perform a translation by (5,0) add 5 to each x coordinate add 0 to each y coordinate

Translation Translate by (2, -1)

Homework 9.1 Worksheet pickup some graph paper