Points M, K and N lie on one straight line, find the length of the segment KN, if MK is 15cm, MN is 6cm.

If point M and K are the end points of the line segment, then point N lies between these points. To find the length of the segment KN, it is necessary to subtract the length of the segment MN from the length of the MK segment:

MK – MN = KN;

KN = 15 – 6 = 9 (cm) – the length of the segment KN;



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