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平行四邊形的面積
Author:
Anthony Or 柯志明
Topic:
Parallelogram
GeoGebra
New Resources
Cross Product in 2D and 3D
Rose Curve - A Classical Construction
Odd or Even
Piano. Keyboard.
Drag that Point!
Discover Resources
Circle Angles
triangle 1
austins final draft2
for Turtle
Practice Using Paired Numbers in All Quadrants
Discover Topics
General Quadrilateral
Vectors 2D (Two-Dimensional)
Median Value
Geometric Transformations
Symmetry