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A teacher draws segment AB and constructs its perpendicular bisector, which meets AB at point M. If AB = 9 cm, what is the length AM (in cm)?

Class 9Constructions of TrianglesGeometry

A9
B4.5
C5.5
D3.5

Step-by-Step Solution

The perpendicular bisector meets

A B

at its midpoint M, so AM =

\frac{A B}{2} = \frac{9}{2} = 4.5

cm.

Answer: B) 4.5

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