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# If point A is located at (-1,-2), then name the coordinates of A’.

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The image of triangle ABC is rotated 180 degrees to image A’B’C’ about the origin. If point A is located at (-1,-2), then name the coordinates of A’. Be sure that your answer is in (x,y) notation with no spaces. A. (6,1)

B. (-3,-2)

C. (1,2)

D. (-2,5)

The pre-image of triangle ABC is rotated 180 degrees to image A’B’C’ about the origin. If point B is located at (-2,-5), then name the coordinates of B’. Be sure that your answer is in (x,y) notation with no spaces. A. (5,-2)

B. (-2,1)

C. (2,5)

D. (1,2)

The pre-image of triangle ABC is rotated 180 degrees to image A’B’C’ about the origin. If point C is located at (-4,3), then name the coordinates of C’. Be sure that your answer is in (x,y) notation with no spaces. A. (4,-3)

B. (-2,1)

C. (1,2)

D. (-1,-2)

Mar 9, 2020

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First  one :

Coordinates  of  A '   =  (1,2)

Second one :

Coordinates of B '  = (2, 5)

Third  one :

Coordinates  of C'   = (4, -3)

Note  that the  rule for a 180°  rotation  seems to  be :

(x , y)  ⇒  ( -x, - y)   Mar 10, 2020