成角透视就是景物纵深与视中线成一定角度的透视，景物的纵深因为与视中线不平行而向主点两侧的余点消失。成角透视多用于室外绘画，可以表现2个画面。成角透视:(两点透视）就是把立方体画到画面上，立方体的四个面相对于画面倾斜成一定角度时，往纵深平行的直线产生了两个消失点。在这平行情况下，与上下两个水平面相垂直的平行线也产生了长度的缩小，但是不带有消失点.平行透视是景物纵深与视中线平行而向主点消失。成角透视就是景物纵深与视中线成一定角度的透视，景物的纵深因为与视中线不平行而向主点两侧的余点消失。
本文介绍一种不受灭点远近限制的成角透视图法，并对其进行几何论证。
This paper introduces a method that we can apply it to draw angular perspective without view points, and it demonstrates this method according to the geometric principles.
等角图较透视图简单得多。它用绘图仪器绘画，三主要轴线与投影面所成的角相等。
Isometric drawing is much simpler than perspective drawing. Drawing instruments sre used to make the drawing in which the three principal axes make equal angles with the plane of projection.
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