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円錐の展開（側面積を視覚でつかむ）
Author:
holon
Topic:
Area
,
Cone
,
Geometry
,
Solids or 3D Shapes
GeoGebra
New Resources
接点の作る円は内接円
standingwave-reflection
サイクロイド
standingwave
円の伸開線
Discover Resources
The Derivative of a function
A Theorem
pathparameter of a point on ellipse
ミケルの定理の逆（直線）
サイクロイド
Discover Topics
Hypothesis Testing
Fractal Geometry
Hyperbola
Congruence
Inequalities