Circle Cyclic Polygons

Find the values of x and y in each of these circles where O is the centre.

• x = 85

• x = 35

• x = 65

• x = 55

Find the values of x and y in each of these circles where O is the centre.

• x = 50°​

  y = 45°

• x = 45°​

  y = 48°

• x = 48°​

  y = 40°

• x = 48°​

  y = 45°

Find the values of x and y in each of these circles where O is the centre.

• x = 26°​

  y = 128°

• x = 66°​

  y = 52°

• x = 36°​

  y = 72°

• x = 55°​

  y = 125°

TRUE or FALSE? Opposite angles of a cyclic quadrilateral are supplementary.

• True

• False

Identify a Center

• A

• C

Identify a Diameter

Identify a Chord

Identify a Secant

Identify a Tangent

TRUE or FALSE? All circles are similar.

• True

• False