Answer:
B. 180
Explanation:
One of the vertexes of figure A is at (1,1)
Its corresponding vertex in Figure B is at (-1,-1).
When a figure is rotated 180 degrees counterclockwise around the origin, we have the transformation rule:
[tex](x,y)\to(-x,-y)[/tex]
Thus, we see that Figure A is rotated 180 degrees counterclockwise.
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