等角的英文：
isogonism

Isometric circle
等角圆

isometric drawing
等角图;等距画法

Plane equiangular spiral antenna
等角平面螺旋天线

Isometric drawing
等角投影图;均角投影图

Isometric drawing was much simpler than perspective drawing.
等角图较透视图简单得多。

A polygon whose angles are equal.
等角多边形各角都相等的多边形

A map shows the isogonic lines.
这张地图展示了等角线。

If you're familiar with contour lines on a map, isogonic lines use the same principle.
如果你熟悉地图上的等高线，那么等角线和它是一个意思。