构成三维树形的线条

仅通过平行线的简单组合，我们就能营造出三维立体感。六年级课堂上开展了这项练习，旨在说明：单靠线条即可构建出三维设计。学生先用铅笔勾勒一棵简单的树，再依次使用四种颜色绘制平行线——重点在于：背景部分的线条须保持笔直，而构成树干与树冠的部分则需绘制成曲线。

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Lines forming a three-dimensional tree

With the simple combination of parallel lines we can give the impression of three-dimensionality. We did this exercise in the 6th grade classes to demonstrate that we can make a three-dimensional design, just using lines. After drawing a simple tree in pencil, the students have drawn parallel lines with 4 colors in sequence, focusing on the development of lines that should be straight on the background of the drawing, and curves on the parts that made up the tree.

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形成三维树的线

构成三维树形的线条

Lines forming a three-dimensional tree