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Triangle Exterior Angle

Tim Brzezinski November 2, 2023
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Triangle Angle Sum Theorem (V4)

Tim Brzezinski December 6, 2022
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7.1 ESL - Investigate Polygon Interio…

Stacey Whitmarsh April 11, 2021
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Grid Whiteboards for Remote Learning

GeoGebra Classroom Activities December 1, 2020
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GG Angles on Parallel Lines

Georgina Green June 11, 2020
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Copy of Angles on Parallel Lines

Georgina Green June 11, 2020
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Copy of Angles in Parallel Lines

Georgina Green June 11, 2020
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Angle Sum of a Triangle

Anthony OR 柯志明 September 12, 2019
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Alternate Angles

Simon Job January 14, 2012
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Featured Resources

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Equivalent Ratios

Duane Habecker November 19, 2019
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Poorly Drawn Quadrilaterals

Steve Phelps March 29, 2019
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Convex quadrilaterals

Paulo Correia November 30, 2018
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Gauss-Jordan 2x2 Elimination

Auston B Cron October 12, 2018
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Angle Estimation Warmup

Andrew Knauft September 18, 2018
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Number Pyramids

Jennifer Silverman August 31, 2018
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Graph the Line

Steve Phelps May 19, 2020
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Guess My Rule (2013)

John Golden October 20, 2022
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5-Piece Puzzle

Duane Habecker August 20, 2018
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GeoGebra Pentominoes

Duane Habecker August 27, 2018
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right triangle paradox

sonom August 22, 2018
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SSA triangle: The Ambiguous Case

talljerome December 1, 2024
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AQR Section 17: Mean but Sensitive

Steve Phelps August 21, 2018
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Secant Slope Calculator

Jake Binnema August 27, 2018
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Exponential or Logistic Function that…

talljerome March 25, 2024
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Growth of Facebook.com

Roy Wright November 22, 2017
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Lower and Upper Sum of a Function

GeoGebra Materials Team April 23, 2014
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One-Son Policy Simulation

Steve Phelps November 22, 2017
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Analog Clock

Duane Habecker November 22, 2017
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Pendulum Wave Machine (Simulation)

Michael Borcherds November 23, 2017
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Hilbert curve

Thijs November 23, 2017
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'Tangram' Puzzle 'Cat'

GeoGebra Translation Team German November 23, 2017
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Moss Egg by Robert Dixon

Bill Lombard August 29, 2018
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Spirograph-Epitrochoid Earth and Moon

Bill Lombard August 16, 2018
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Inclined Plane with Two Masses and a …

Tom Walsh March 13, 2018
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The Relationship Between Human Height…

Roy Wright August 22, 2017
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Factorization - Visual illustration o…

Ethan Hall November 23, 2017
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Kaleidoscope

Michael Borcherds November 22, 2017
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Rotating a Triangle Around a Coordina…

Steve Phelps November 23, 2017
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Area of a Circle - Wedge/Sector Demon…

Linda Fahlberg-Stojanovska November 23, 2017
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