This shows that the line AC divides BC into equal parts showing that BC = CD
What is bisection of a line?
Bisection simply means dividing the section of a line into two parts.
From the given proof shown, we can see that the proof shows that the line AC bisects the line BD at point C.
This shows that the line AC divides BC into equal parts showing that BC = CD
Hence the expression that proves the bisection is BC = CD
Learn more on bisection here: https://brainly.com/question/25770607
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