The center point of a circle that passes through all vertices of a polygon, especially a triangle; the point equidistant from all corners.
Combining circum- (around) with center (from Latin centrum, the midpoint). A geometry term that became standard in mathematical language.
The circumcenter is a magical point in geometry—for any triangle, it's the one spot where you could balance the triangle on a pencil point, and it determines the circle that passes perfectly through all three corners.
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