Feliz/Happy 2014的副本

Author:: xiaodandan, Ester Alonso

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Open Middle: Basic Statistics Exercise (1)
G_9.07 Similarity in solid figures
Box and Whisker: Quick Construction Exercises
Pairs of Numbers Given a Sum
Chapter-45: Curl detector

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Geometrical 3 x 3 System Solver
H - Reflected Point
TO FIND THE CENTRE OF A CIRCLE
Volume of Parallelepiped
Quadrilateral Properties Discovery

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Right Triangles
Equilateral Triangles
Step Functions
Quadrilaterals
Power Functions