The length of the segment AB is 50 cm Points M and N lie on this segment. Find the length of the segment MN if: a) AM = 15 cm, NB = 19 cm B) AN = 38 cm, NB = 26 cm
A) The length of the segment AB – 50cm;
AM – 15cm;
NB – 19cm;
First, add AM and NB to find out their total length.
1) AM + NB = 15 + 19 = 34cm;
Secondly, we make a decrease and find out the length of the segment MN.
2) 50 – 34 = 16cm.
MN = 16cm.
Answer: The length of the segment MN is 16 cm.
B) AN – 38cm;
NB – 26cm;
If the segment AM = NB = 26cm, then we make a decrease and find MN.
AN = AM + MN;
MN = AN – AM;
AM = NB;
MN = AN – NB;
MN = 38-26;
MN = 12cm.
Answer: The length of the segment is 12 cm.
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