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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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.

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