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GeoGebra Lesson
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GeoGebra Lesson
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Rectangle & Parallelogram Comparison
Author:
Jed Butler
Drag the blue points to change size and shape. What do you notice?
GeoGebra
New Resources
Identifying Solids Formed by Rotation
繪畫垂直線
Squaring a Rectangle (PST Version)
Linear Combination of Vectors
Angle Addition Postulate (V2) - Integer Solutions
Discover Resources
Principia Prop. I.14
Translation Screensaver
Two Congruent Sides and the Angle Between Them
Ex2b: Reflection in the line y = 0
Algebraic Reasoning
Discover Topics
Combinatorics
Power Functions
Tree Diagrams
Median Line
Angles