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Wu Suet Yu's Teaching Plan (WS)

Ch.6 More about 3-D Figures

Worksheet I

Angles Between Two Planes

  1. Which one(s) is an angle between these two plane? (You can choose more than one)

(a) ADE

(b) ACB

(c) ACF

(d) GHI

  1. Try to form some angles which is between two planes using the above points, where the first point is in purple, the second is in red and the last one is in green. Write down the angles between two planes that are believed to have different size. Write as many as possible!

  1. Move the plane to a view that you can measure the angle between two planes. Measure the angle using the protractor.

Size of the angle between two planes = _____________

Which groups of angle in the question 2 has the same size as the measured angle?

List out the angles in the group.

Which one(s) should we choose to represent the angle between two planes? Why?

  1. What are the keys steps in finding angles between two planes?

DMU Timestamp: November 27, 2019 01:26





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