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Part 1
Author:
19leen
GeoGebra
New Resources
Open Middle Inscribed Angle Exercise (2)
Open Middle Cyclic Quadrilateral Exercise
Open Middle Sector Area Exercise
Mapping Rectangles into Discs
π = 4 ?
Discover Resources
Colors for a figure
Reflection-7
Quadrilateral is a Parallelogram
比較數量應用題：四年級有學生多少人？
APMO
Discover Topics
Similarity Transformation or Similarity
Logic
General Quadrilateral
Tree Diagrams
Tangent Function