Answer:
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Assuming rotation is about origin, then
R180: (x,y)->(-x,-y)
So
A(6,8)->A'(-6,-8)
B(6,12)->B'(-6,-12)
C(10,12)->C'(-10,-12)
The sum of a number and its additive inverse is equal to zero. E.g. an additive inverse of 2 is -2.
Step-by-step explanation:
i hope this helps