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)

Paragraph 5 0
No paragraph-level conversations. Start one.

Paragraph 5, Sentence 1 0
No sentence-level conversations. Start one.

Paragraph 5, Sentence 2 0
No sentence-level conversations. Start one.

(a) ADE

(b) ACB

(c) ACF

(d) GHI

2. 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!

Paragraph 10 0
No paragraph-level conversations. Start one.

Paragraph 10, Sentence 1 0
No sentence-level conversations. Start one.

Paragraph 10, Sentence 2 0
No sentence-level conversations. Start one.

Paragraph 10, Sentence 3 0
No sentence-level conversations. Start one.

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

Paragraph 11 0
No paragraph-level conversations. Start one.

Paragraph 11, Sentence 1 0
No sentence-level conversations. Start one.

Paragraph 11, Sentence 2 0
No sentence-level conversations. Start one.

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?

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

Paragraph 16 0
No paragraph-level conversations. Start one.

Paragraph 16, Sentence 1 0
No sentence-level conversations. Start one.