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円に内接する正三角形 Are points A, P, and D collinear?
Author:
okyota
Topic:
Angles
,
Circle
,
Circumcircle or Circumscribed Circle
,
Equilateral Triangles
,
Geometry
,
Line Segment
,
Mathematics
,
Triangles
赤い点を動かして,点A,P,Dが一直線上にあるか[check]をクリックして調べてみよう。
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