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GeoGebra
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GeoGebra
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Angle from centre to tangent is 90
Author:
Daniel Eggleton
GeoGebra
New Resources
探究由平行線和截線所成的角
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Parallelograms: Quick Investigation
Tutorial: Create lists of numbers and objects
Quiz: Finding Average Rate of Change
Discover Resources
Golden Pentagon & Triangles- Cassidy Gorsky
Simple Graphs
Two Triangles with Area 5
Accessibility items
CCSS High School: Geometry (Circles)
Discover Topics
Pythagoras or Pythagorean Theorem
Pie Chart or Circle Chart
Isosceles Triangles
Geometric Mean
Rhombus