The Distance between the midpoints of segments OA and AB is 4.5cm
A line is defined as the shortest distance between two points.
Given the following parameters
OA = 12cm
OB = 9cm
AB = OA - OB
AB = 12 - 9 = 3cm
midpoint of OA = 12/2 = 6cm
midpoint of AB = 3/2 = 1.5cm
Distance between the midpoints of segments OA and AB in each case will be the difference between the midpoints
Difference = 6cm - 1.5
Difference = 4.5cm
Hence the Distance between the midpoints of segments OA and AB is 4.5cm
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