John Hansen – Resources – GeoGebra

Area of a Triangle - Three Formulas
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John Hansen
Area of a Triangle SAS
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John Hansen
Heron's Formula
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John Hansen
MAG111 Scale Factor and Area
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John Hansen
Congruency and Similarity SAS
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John Hansen
Gradient of a line segment
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John Hansen
MAT091 Ratios and Scale Factor 2
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John Hansen
Congruency and Similarity
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John Hansen
Congruency and Similarity ASA or AAS or SAA
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John Hansen
Congruency SSA or ASS
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John Hansen
Geometry - Angles at a Point - Opposite Angles are Equal
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John Hansen
Geometry -Line crossing a pair of Parallel Lines - F Rule
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John Hansen
Geometry -Line crossing a pair of Parallel Lines - Z Rule
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John Hansen
Properties of Similar Triangles
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John Hansen
Congruency and Similarity SSS
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John Hansen
Measurement - Perimeter of an Arc of a Circle
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John Hansen
Measurement - Area of a Sector of a Circle
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John Hansen
Measurement - Area of a Sector of a Circle
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John Hansen
Polar form to Cartesian form
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John Hansen
What are the cartesian co-ordinates of a Point given in Polar form?
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John Hansen
Sine Rule
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John Hansen
Pythagoras' Thm and 3D Shapes
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John Hansen
Pythagoras' Rule (or Theorem)
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John Hansen
Pythagoras' Thm and 3D Shapes Example 3
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John Hansen