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23.04.2020 •
Mathematics
Which correctly describes the two transformations that where used to create the image on the graph?
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Ответ:
A. Reflection over the y-axis and rotation 90° counterclockwise
Ответ:
Step-by-step explanation:
Right triangle ABC is reflected over AC to form triangle AFC.
Triangle AFC dilated by a scale factor of two-thirds to form triangle DEC.
Reflection is a rigid transformation which preserves lengths and angles, then
Dilation is a transformation which maps the triangle into similar triangle, so
Thus,
Similar triangle have congruent corresponding angles, so
and proportional corresponding sides
Thus, correct options are: