HKMO1516GCQ1

Author:
Shepherd
Topic:
Geometry
Suppose there are three different parallel lines, L1, L2 and L3. Construct an equilateral triangle with only one vertex lies on each of three parallel lines. 假設有三條不同的平行線， L1、L2 及 L3。 構作一個等邊三角形，其中每條平行線只會有一個頂點存在。
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