Which of the following is not the synonym of oval?
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Visualize the geometry: Ovoid, Elliptic, and Ovate are all terms derived from roots meaning "egg" or "rounded curve". Angular comes from the root for "angle" (like a corner), making it the exact structural opposite of a rounded shape.
Elliptical, ovoid, and oblong all describe elongated rounded shapes, but "circular" denotes a perfect round shape with equal radii, making it NOT a synonym of oval. Answer: Circular