Circle Theorem Review

Which segment is the diameter?

• DE

• BO

• AO

• AB

If DE is a chord, what do we think the definition of a chord is?

• the same as a radius

• the same as a diameter

• a line segment connecting two points on the circumference of a circle

• a line segment with one point on the circumference and the other point at the center

What is this an example of?

• radius

• diameter

• secant

• tangent

If a radius is 5 cm then what is the length of the diameter?

• 90^o

• 180^o

• 100^o

• 80^o

Point M is the center of the circle shown. Find the measure of angle ZMY.

• 44

• 46

• 88

• 92

Find the measure of angle ADB.

• 47.5

• 85

• 132.5

• 180

What is the equation of the circle shown in the graph?

Mathematical Equivalence

ON

Find a and b.

• a=74 degrees
  b=93 degrees

• a=93 degrees
  b=74 degrees

• a=87 degrees
  b=106 degrees

• a=106 degrees
  b=87 degrees

Find the value of x in circle Q. Explain your reasoning.

• 25

• 5

• 18

• 35