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Polygon Angle–Sum Discovery
Author:
Lindsay Ross
,
Tim Brzezinski
Topic:
Angles
,
Polygons
Triangle
GeoGebra
Quadrilateral
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Pentagon
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Hexagon
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Heptagon
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Octagon
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Quick Demo (BGM: Andy Meyers)
New Resources
Ellipse, Hyperbola and Circle as Envelopes
Isosceles Triangle: Quick Construction
Simplifying Radicals: Geometric Thin Slice
"Compressed" Astroid as Envelope
Construct a Square
Discover Resources
Start, Perpendicular to line from point not on line
Crazy Cousin Floyd
tropecija
เศษส่วน
Black and white temari balls
Discover Topics
Conditional Probability
Percentages
Natural Numbers
Exponent
Pythagoras or Pythagorean Theorem