Question

If AB = 20 units and M is the midpoint of AB, then AM = ________ units.

• A. 30
• B. 20
• C. 50
• D. 10

Answer 1

The correct option is D 10


Let M be the midpoint of a line segment with length 20 units. Midpoint M divides the line segment into two equal parts AM and BM.
$\therefore AB=AM+BM=20$
$\therefore AM=\frac{20}{2}=10$ units