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10.1A Isometries Name four transformations? What is an isometry?

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Presentation on theme: "10.1A Isometries Name four transformations? What is an isometry?"— Presentation transcript:

1 10.1A Isometries Name four transformations? What is an isometry?
What transformations are isometries?

2 Name four transformations?
Reflections Rotations Translations Dilations

3 Reflection, rotation, translation or dilation?
Vector <3, −4> F G E F’ G’ E’

4 Reflection, rotation, translation or dilation?
M L N L’ M’ N’

5 Reflection, rotation, translation or dilation?
Q’ P’ P Q O’ O R R’

6 Definition An isometry is a transformation that preserves distance.

7 Therorem Translations, reflections and rotations are isometries.

8 Name four transformations?
Reflections, rotations, translations and dilations. What is an isometry? A transformation that preserves distance. What transformations are isometries? Translations, rotations and translations.

9 Assignment 10-1A Page 670, 1-12, 21-23

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