The length of RZ can be obtained using the midpoint theorem, therefore the length of RZ would be half the length of RR which is 6.
Given that :
Since, RZ divides the segment RR into two equal portions ;
RZ = (RR ÷ 2)
RZ = (12 ÷ 2) = 6
Therefore, the length of the line RZ would be 6.
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