单词	central angle
释义	central angle noun : an angle formed by two radii of a circle Word History First Known Use 1766, in the meaning defined above Kids Definition central angle noun : an angle with its vertex at the center of a circle and with sides that are radii of the circle
随便看	bedsitteres bedsitters bedsitting room bedsitting rooms bedsocks bedsoniae bedsonias bedsore bedsores bedspread bedspreads bedspring bedsprings bedstaff bedstands bedstead bedsteads bedstock bedstraw bedstraws bedtables bedtick bedticking bedticks bedtime

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