The points A, B, C and D are collinear points
The length of the segment AD is 7 units
<h3>How to determine the length AD?</h3>
The given parameters are:
AB = 1
BC = 2
CD = 4
Because the points are on the same line, then the following is the possible equation
AD = AB + BC + CD
Substitute known values
AD = 1 + 2 + 4
Evaluate the sum
AD = 7
Hence, the length of the segment AD is 7 units
Read more about line segments at:
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