Ryan's Book

ryanraymond23, 16/5/2017


  • 1. Area of Circles
  • 2. Graph 1
  • 3. Unit Circle and Sine Graph
  • 4. Exterior Angles of Polygons
  • 5. Probability: Selecting Balls
  • 6. Surface Area for Cuboid
  • 7. Circle theorems
  • 8. Journey of a Car and Distance-Time Graphs
  • 9. Simultaneous Line and Circle

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Area of Circles

What is the area of a circle? Explore with the following applet.
Anthony Or, GeoGebra Institute of Hong Kong.
– Anthony OR 柯志明

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