S.3 Ch.4 More about 3-D solids

Alexander Lau, smcemath, Tim, 2018年3月13日

目錄

  1. Reflectional Symmetry
    1. Reflectional Symmetry of Triangular Prism
    2. Reflectional Symmetry of Cylinder
    3. Reflectional Symmetry of Trapezoidal Prism
  2. Rotational Symmetry
    1. Rotational Symmetry of Cube
    2. Rotational Symmetry of Tetrahedron
  3. Front, side and top view
    1. Front, side and top view
    2. Front, side and top view - Why 3 angles?
  4. Angles, projection
    1. Angle between line and plane
    2. Angle between line and plane 2
    3. Angle between line and plane 3
    4. Angle between line and plane 4
    5. Angle between two planes
    6. Angle between two planes 2
    7. Angle between two planes 3
    8. Angle between two planes 4
    9. Lighthouse

1.

Reflectional Symmetry

  • 1. Reflectional Symmetry of Triangular Prism
  • 2. Reflectional Symmetry of Cylinder
  • 3. Reflectional Symmetry of Trapezoidal Prism

1.1.

Reflectional Symmetry of Triangular Prism

Reflectional Symmetry of Triangular Prism
– Alexander Lau

1.2.

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1.3.

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2.

Rotational Symmetry

  • 1. Rotational Symmetry of Cube
  • 2. Rotational Symmetry of Tetrahedron

2.1.

Rotational Symmetry of Cube

Drag the red points on the top and the bottom of the cube to investigate its rotational symmetry.
– Anthony OR 柯志明

2.2.

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3.

Front, side and top view

  • 1. Front, side and top view
  • 2. Front, side and top view - Why 3 angles?

3.1.

Front, side and top view

Front, side and top view
– Alexander Lau

3.2.

–

4.

Angles, projection

  • 1. Angle between line and plane
  • 2. Angle between line and plane 2
  • 3. Angle between line and plane 3
  • 4. Angle between line and plane 4
  • 5. Angle between two planes
  • 6. Angle between two planes 2
  • 7. Angle between two planes 3
  • 8. Angle between two planes 4
  • 9. Lighthouse

4.1.

Angle between line and plane

– Alexander Lau

4.2.

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4.3.

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4.4.

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4.5.

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4.6.

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4.7.

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4.8.

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4.9.

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資訊