axis of symmetry
基礎(chǔ)科學(xué)

        Definition: The axis of symmetry or line of symmetry of a two-dimensional figure is a linesuch that,for each perpendicular constructed,if the perpendicular intersects the figure at adistance “d” from the axis along the perpendicular,then there exists anot......（本文共 626 字）     [閱讀本文] >>