👉 The term "orthocentre" in geometry refers to a point where three altitudes of a triangle meet. An altitude is a line segment that passes through one vertex of a polygon and is perpendicular to the opposite side. An orthocenter is defined as the intersection of all three altitudes from a given vertex of a triangle. It's named after the Greek mathematician Hipparchus, who described it in his work "On the Measurement of the Earth."
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