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Unusual Tangram 8
Author:
Arthur Lee
Use the 3 green triangles to make the blue one.
GeoGebra
New Resources
The Coordinate Plane (Cartesian Plane)
Parallel Lines and Angles: Thinking Classroom Exploration
巧算長方形周界
apec
Perimeter of a Rectangle with Unknown Sides
Discover Resources
Right Triangle Construction
triangle_centroid
triangles
Untitled
Temari Ball 1
Discover Topics
Function Graph
Perimeter
Straight Lines
Cuboid
Means