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1.4.5利用空间向量判断平面与平面平行
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2.6.2 阿波罗尼斯圆
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1.4.2 平面法向量的概念
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1.4.3 利用空间向量判断两条直线平行
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8.6.2直线与平面垂直概念
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8.6.3折纸实验和线面垂直的判定定理
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1.4.4利用空间向量判断直线与平面平行
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8.5.2 （一）平面与平面平行的判定
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8.5.2 （二）平面与平面平行的性质
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正三棱柱一例
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对数函数描点连线
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立体几何折叠问题一例
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Duane Habecker
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Steve Phelps
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Paulo Correia
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Gauss-Jordan 2x2 Elimination
Auston B Cron
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Steve Phelps
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John Golden
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Guess My Rule (2013)
John Golden
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Duane Habecker
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Duane Habecker
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right triangle paradox
sonom
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SSA triangle: The Ambiguous Case
talljerome
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Least Squares
timteachesmath
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AQR Section 17: Where's the Mean?
Steve Phelps
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Secant Slope Calculator
Jake Binnema
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Exponential or Logistic Function that…
talljerome
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Lower and Upper Sum of a Function
GeoGebra Materials Team
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Steve Phelps
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Duane Habecker
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Pendulum Wave Machine (Simulation)
Michael Borcherds
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05.1 Measures of Central Tendency
sonom
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Hilbert curve
Thijs
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'Tangram' Puzzle 'Cat'
GeoGebra Translation Team German
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Moss Egg by Robert Dixon
Bill Lombard
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Spirograph-Epitrochoid Earth and Moon
Bill Lombard
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Roy Wright
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Factorization - Visual illustration o…
Ethan Hall
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Kaleidoscope
Michael Borcherds
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Rotating a Triangle Around a Coordina…
Steve Phelps
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Area of a Circle - Wedge/Sector Demon…
Linda Fahlberg-Stojanovska
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Triangle Paradox (Missing square puzzle)
Michael Borcherds
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