Question

Points L,M and N are collinear.M is between L and N. You are given LM=13 and LN=20.Find the length of MN

Answer 1

MN = 7

Step-by-step explanation

Let's draw a diagram first:

Since all the points are collinear we can use the segment addition postulate:

`LM+MN=LN`

Replacing with the values we know:

`13+MN=20`

And solving for MN:

`MN=20-13=7`

We have that the length of segment MN is 7.