Circle Theorem Lines Crossing Inside Circle

extension

diagram shows a tangent to a circle with centre O. Find x and y in each case

• x = 12°

  y = 156°

• x = 100°

  y = 50°

• x = 62°

  y = 28

• x = 30°

  y = 60°

What is the m∠ADB?

• 16^o

• 32^o

• 64^o

• 14^o

find the measure of angle a

• 30

• 21

• 60

• 120

What is the size of angle x?

• 19^o

• 76^o

• 39^o

• 38^o

Find the value of the angle marked x....

• 63

• 126

• 54

• 90

what are the values of c and d?

• c = 218, d = 71

• d = 109, c = 71

• c = 142, d = 218

• c = 142, d = 109

What is the measure of angle c and d?

• c = 21, d = 50

• c = 63, d = 78

• c = 78, d = 63

• c = 10, d = 50

Which is the correct way to solve this?

• x=(360-110)/2

• x=110/2

• x=(250-110)/2

• x=(250+110)/2

Which is the correct way to solve this?

• 70=(180+x)/2

• 70=(180-x)/2

• x=(180+70)/2

• x=(180-70)/2

Which is the correct way to solve this?

• x=(62-50)/2

• x=(62+50)/2

• 50=(62+x)/2

• 62=(50+x)/2