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同心圓
建華 黃
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弦切角定理（题目解答）
董君
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4
Polyon Interior Angles: Investigations
Tim Brzezinski
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圓心角圓周角弦切角
陳渙鏘
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內切圓生成
王郁茜
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從射門角度看圓周角
王郁茜
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弦與弦心距的關係
王郁茜
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61
应用与艺术
学用数学
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Area of a Circle
Tim Brzezinski
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Área del trapecio
Instituto GeoGebra - Tecnológico de Costa Rica
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Estática - Vectores y equilibrio tras…
profeDomingoHely Perez
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64 geometric puzzles (a competitor of…
Daniel Mentrard
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Equivalent Ratios
Duane Habecker
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Poorly Drawn Quadrilaterals
Steve Phelps
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Convex quadrilaterals
Paulo Correia
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Gauss-Jordan 2x2 Elimination
Auston B Cron
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Angle Estimation Warmup
Andrew Knauft
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Number Pyramids
Jennifer Silverman
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Graph the Line
Steve Phelps
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Flip Flop
John Golden
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Guess My Rule (2013)
John Golden
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5-Piece Puzzle
Duane Habecker
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GeoGebra Pentominoes
Duane Habecker
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right triangle paradox
sonom
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SSA triangle: The Ambiguous Case
talljerome
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AQR Section 17: Mean but Sensitive
Steve Phelps
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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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Growth of Facebook.com
Roy Wright
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Lower and Upper Sum of a Function
GeoGebra Materials Team
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One-Son Policy Simulation
Steve Phelps
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Analog Clock
Duane Habecker
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05.1 Measures of Central Tendency
sonom
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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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Inclined Plane with Two Masses and a …
Tom Walsh
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The Relationship Between Human Height…
Roy Wright
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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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