File talk:Triangle.Right.svg
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Although an arc indicates the measurement of an angle, 90-degree angles are usually indicated with a square in the corner instead. Davilla 59.112.37.199 17:52, 15 May 2006 (UTC)
Although an arc indicates the measurement of an angle, 90-degree angles are usually indicated with a square in the corner instead. Davilla 59.112.37.199 17:52, 15 May 2006 (UTC)[回复]
