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Fold equilateral triangle(正三角形の折り返し 相似)
Author:
okyota
Topic:
Equilateral Triangles
,
Geometry
,
Mathematics
,
Plane Figures or Shapes
,
Planes
,
Similar Triangles
,
Triangles
First, [start] → [move] (まずは、[start]→[move])
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