math_f.1_CH11 Angles related to Lines

In the figure, AOB is a straight line. Find x.

• 25°

• 50°

• 65°

• 130°

Find y in the figure.

• 60°

• 100°

• 120°

• 150°

In the figure, AOB and COD are straight lines. Find w.

• 26°

• 30°

• 32°

• 36°

In the figure, AOB and COD are straight lines. Find x and y.

• x = 42°, y = 69°

• x = 42°, y = 111°

• x = 69°, y = 69°

• x = 69°, y = 138°

Find x in the figure.

• 37°

• 43°

• 49°

• 55°

In the figure, AFB, CGD and EFG are straight lines. Find x.

• 42°

• 48°

• 52°

• 58°

In the figure, EH intersects AB and CD at F and G respectively. Find y.

• 34°

• 56°

• 64°

• 86°

Which of the following CANNOT be a condition for proving AB // CD?

• a = d

• b = e

• a + b = 180°

• a + c = 180°

In the figure, ACE, BCD and DEF are straight lines. Find ∠CDE.

• 50°

• 53°

• 56°

• 59°

In the figure, AOB is a straight line. Find x.

• 50°

• 57.5°

• 60°

• 67.5°