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#15 4-1例題42
Author:
宋允光
GeoGebra
New Resources
Tracing an Ellipse Using Two Circles
巧算長方形周界
Rolling a Square
General Polar Equation of Conics with Rotation (1)
Open Education 2026
Discover Resources
הזזה אנכית
sqrt-2_17
Areas of Parallelograms and Triangles
Mr D´s project
Construction
House
Discover Topics
Constructions
Differential Calculus
Circumcircle or Circumscribed Circle
Rational Numbers
Complex Numbers