Answer:
I am pretty sure that your answer would be 3.
Explanation:
The reason why is because if B if half of line segment AD and AD is equal to 12, then B must be equal to 6 since half of 12 is 6. Next, since C is the mid-point for line segment BD then C must be 3 since half of 6 is 3. And finally, that means line segment BC is three since it is 1/2 of BD.
Hope this helps! :)
BC = 3
If B is the midpoint of AD, that means AB = BD
AD = 12 so BD = 1/2 of AD and BD = 6
If C is the midpoint of BD, that means BC = CD
BD = 6 so BC = 1/2 of BD and BC = 3
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