
1.1 Class Quiz 15: Revision of Ch.9
QuizĀ by Ms Choi
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In the figure, AD, BE and CF intersect at O.Which of the following must be true?
I.Ā Ā Ā Ā x = y = z
II.  x + y + z =180°


Refer to the figure. Find x.

In the figure, ACE and BCD are straight lines. Find x.

In the figure, D is a point lying on AB. Find b and c.Ā

Refer to the figure. Which of the following is/are true?
I.    x = 45°
II.Ā Ā AB is not parallel to DC.

What is the correct reasons for AB // DC.

What is the correct reasons for AB // CDĀ .

What is the correct reasons for AB // CDĀ .

Which of the following groups can be the three interior angles of a triangle?
I.    10°, 70°, 100°
II.  20°, 90°, 90°
III. 30°, 50°, 80°