# Wong Chun Ying

• ### angle between line and plane

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Wong Chun Ying

• ### Angles between planes (concept check)

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Wong Chun Ying

• ### S3 Example 4.3

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Wong Chun Ying

• ### S3 Example 4.2

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Wong Chun Ying

• ### S3 Example 4.1

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Wong Chun Ying

• ### Special Lines and Centres in a Triangle

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Wong Chun Ying

• ### Graphs of Quadratic Functions

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Wong Chun Ying

• ### part (a), (b) and (c)

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Wong Chun Ying

• ### Angle between two planes

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Wong Chun Ying

• ### part (d)

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Wong Chun Ying

• ### Maintain an equal distance from two intersecting lines

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Wong Chun Ying

• ### Maintain an equal distance from two fixed points

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Wong Chun Ying

• ### Maintain an equal distance from two intersecting lines (students)

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Wong Chun Ying

• ### Properties of Parallelogram

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Wong Chun Ying

• ### Maintain equal distance from two fixed points (students)

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Wong Chun Ying

• ### Donkey

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Wong Chun Ying

• ### Area of rectangle, parallelogram and triangle

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Wong Chun Ying

• ### 點與面的關係

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Wong Chun Ying

• ### Bearing

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Wong Chun Ying

• ### 線段與面的關係

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Wong Chun Ying

• ### 利用圓內接正多邊形估算圓周率

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Wong Chun Ying

• ### Practice 4.9

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Wong Chun Ying

• ### Ex 4.4 (8)

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Wong Chun Ying

• ### Ex 4.4 (5)

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Wong Chun Ying