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A dilation is never an isometry.
I know this because I got the answer wrong on a quiz and I my teacher told me the correct choice.
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∙ 12y ago
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Which transformation is not an isometry?
Dilation.
Which transformation is not always an isometry?
Dilation
What is an isometry?
A isometry is a transformation where distance (aka size) is preserved. In a dilation, the size is being altered, so no, it is not an isometry.
What transformation is not an isometry?
Dilation - the image created is not congruent to the pre-image
Why is a dilation not an isometry?
Because the image is not the same size as the preimage. To do a dilation all you do is make the image smaller or larger than it was before.
Which transformation is not an isometry?
Dilation.
Which transformation is not always an isometry?
Dilation
What is an isometry?
A isometry is a transformation where distance (aka size) is preserved. In a dilation, the size is being altered, so no, it is not an isometry.
What transformation is not an isometry?
Dilation - the image created is not congruent to the pre-image
Why is a dilation not an isometry?
Because the image is not the same size as the preimage. To do a dilation all you do is make the image smaller or larger than it was before.
Is a rotation an isometry?
Yes, a rotation is an isometry.
Is a translation an Isometry?
Yes, translation is part of isometry.
A preimage and an image are congruent in an isometry?
Yes. Being congruent is part of the definition of an isometry.
What is Isometry?
An isometry is a transformation in which the original figure and its image are congruent. Shape remains constant as size increases.
Explain why a glide reflection is an isometry?
Because the glide reflection is a combination of two isometries, it is also an isometry.
An isometry can be illustrated with a graphing calculator. Which function rule matches the isometry?
(x,y) (-x,-y)
An isometry is a transformation that preserves?
no
