单词	point symmetry
释义	point symmetryˈpoint ˌsymmetry noun [uncountable] math, geometry the quality of an object or figure that can be turned 180 degrees around a point and still look the same. In other words, it looks the same upside down and right side up. → reflectional symmetry
随便看	fade fade-in fade-out faerie Fahrenheit fail failed failing fail-safe failure fain faint faint-hearted faintly faintness fair Fairbanks, Douglas fairer sex fair game fairground fair-haired boy fairly fair-minded fairness fair play

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