Question

There are four points on a line: A, B, C and D, so that AB=1, BC=2, CD=4. Find the length of segment AD .Consider all possibilities and draw a picture for each one of them.

Answer 1

AB (1)+BC (2)+CD (4)= 7
So AD would equal 7

Answer 2

The answer is 7

Length of all the the three segments is equal to the length of the line segment AD