Given a quadrilateral
which has origin - symmetry. Which transformation below will map quadrilateral
onto itself?
Options
A
B
C
A translation by
D
or
Answer & Analysis
Answer
D
Analysis
Question Analysis
This question involves Transformation notation. The main focus is on determining which transformation will map a quadrilateral onto itself.
Key Concept Explanation
Transformations include rotations ( where is the center of rotation and is the angle of rotation), dilations ( where is the center of dilation and is the scale factor), and translations (represented by a vector ). A transformation maps a figure onto itself when the pre - image and the image coincide exactly.
Step-by-Step Solution
1. Analyze each transformation:
A.For a rotation , each point of the quadrilateral is rotated 270 degrees counter - clockwise around the origin . This will change the position of the quadrilateral and not map it onto itself.
B.For a dilation , the quadrilateral is dilated by a scale factor of - 2 with the origin as the center of dilation. The size and orientation of the quadrilateral will change, and it will not map onto itself.
C.For a translation by
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