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Angle in a semi-circle
Author:
Nicola Trubridge
Topic:
Circle
Theorem 2. Angle subtended at the circumference by a semicircle is 90°
GeoGebra
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GeoGebra around GeoGebra
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bewijs stelling van Pythagoras
Proving Triangles Congruent (2): One Step Transformations
Constructing the Copy of an Angle + Angles Activities
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Given 3 sides: Self-check applet
Non-square rectangle
《建中科學 102 填充5》
perpendicular to diagonals of a cube
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Coordinates
Dilation
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Secant Line or Secant
Prism