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Marybeth Gakos
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Exploring Polygon Angles: Triangle th…
Tim Brzezinski
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Quiz Construct an angle bisector
cf_wright
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Triangle Exterior Angle
Tim Brzezinski
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Orthocenter Exploration
Tim Brzezinski
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Open Middle: Circle Tangent to Line (1)
Tim Brzezinski
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Inequalities in 1 Triangle
Tim Brzezinski
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Footprints in the Sand (V2)
Tim Brzezinski
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Cross Section to Surface of Revolutio…
Tim Brzezinski
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Interior and Exterior Angles of Polygons
Rasha Tarek
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Discovering Euler's Formula
Katie Rupe
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Exploring Reflections in Parallel Lines
Marybeth Gakos
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Exploring Glide Reflections
Marybeth Gakos
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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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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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Least Squares
timteachesmath
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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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'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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Inclined Plane with Two Masses and a …
Tom Walsh
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The Relationship Between Human Height…
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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