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Answer:
A. and
Step-by-step explanation:
Given:
Vertices of triangle RST are and
.
Rotation is 90° about the center O(0,0). The rotation is counter-clockwise as the angle of rotation is positive.
Now, the co-ordinate rule for 90° rotation counter-clockwise is given as: →
and
values interchange their places with
becoming negative when interchanged.
So, →
→
→
⇒ →
Therefore, the image of the vertices are and
.