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3d
- Prostopadłościan
- Test yourself: Reflection
- Angle of Elevation & Angle of Depression 仰角和俯角
- Cube Geometry: Shortest Path Between Points - A Net
- Integer Base/Exponents
- Zero as an Exponent
- The Significance of a Negative Index (Power)
- Mean, Median, Mode, and Range
- Meaning of Permutations & Combinations 排列與組合的意義
- Reference Angle 參考角
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3d
Wong hok, Jul 11, 2015
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1. Prostopadłościan
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2. Test yourself: Reflection
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3. Angle of Elevation & Angle of Depression 仰角和俯角
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4. Cube Geometry: Shortest Path Between Points - A Net
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5. Integer Base/Exponents
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6. Zero as an Exponent
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7. The Significance of a Negative Index (Power)
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8. Mean, Median, Mode, and Range
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9. Meaning of Permutations & Combinations 排列與組合的意義
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10. Reference Angle 參考角
Prostopadłościan
Prostopadłościan
Suwaki a, b - krawędzie podstawy, H - wysokość graniastosłupa,
α - obrót dookoła osi poziomej, β - obrót dookoła osi pionowej, sα, sβ - szybkości automatycznej zmiany suwaków α i β, zoom - skalowanie,
n - wybór jednego z trzech przekrojów: 1- wyznaczonego przez środki równoległych krawędzi podstaw, 2 - wyznaczonego przez przekątne podstawy, 3 - wyznaczonego przez przekątne ścian bocznych.
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