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18.12.2019 •
Mathematics
For which type of transformation are the image and pre-image not necessarily congruent? translation reflection dilation rotation
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Ответ:
The correct option is 3.
Step-by-step explanation
In translation, the figure moves from one place to another without changing its shape and size. It means translation is a rigid transformation and in translation the image and pre-image are congruent.
In reflection, the figure is reflected across a line without changing its shape and size. It means reflection is a rigid transformation and in reflection the image and pre-image are congruent.
In dilation, the figure is enlarged or compressed by a scale factor without changing its shape. It means the size of image and preimage are different. After dilation image and pre-image are similar and not necessarily congruent.
Therefore the correct option is 3.
In rotation, the figure is rotated about a point without changing its shape and size. It means rotation is a rigid transformation and in rotation the image and pre-image are congruent.
Ответ:
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