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Defining Trigonometric Ratios
Author:
Anthony OR 柯志明
Topic:
Ratios
GeoGebra
Anthony Or. GeoGebra Institute of Hong Kong.
orchiming@gmail.com
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Exploring GeoGebra for the First Time
Reflection = 180° Rotation about a Line
Reflection across a line
רישום חופשי
bewijs stelling van Pythagoras
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Distance Formula
sine and cosine functions linked to the unit circle
false/orthocenter-mirror-are-collinear.ggb
น้องเรือ
Jeener's Klein Surface
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Intersection
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Incircle or Inscribed Circle