A line, plane, or other geometric element that divides something into two equal parts.
From 'bisect' with the agent suffix '-or,' denoting something that performs the action of bisecting. Similar formations include 'creator,' 'protector,' 'director.'
The angle bisector theorem is a cornerstone of geometry—it states that an angle's bisector divides the opposite side in the same ratio as the other two sides, connecting angles to proportions beautifully.
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