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Geometry: Triangles, Circles, and Polygons
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A line segment that is tangent to a circle O at its midpoint has its endpoints at A and B. If AB = the diameter of circle O, then triangle OAB is a right triangle.
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A
True
💡 Explanation:
The radius drawn to a point of tangency is perpendicular to the tangent line. Since the tangent is perpendicular to radius at the midpoint, and AB is a line segment, angle OAB is 90°, making triangle OAB a right triangle.