56. What part of OP IS AB?
a. chord
b. radius
c. diameter
d. secant
57. In OP, DB is the
a. chord
b. radius
c. diameter
d. secant
D
58. PC in OP is called
a. chord
b. radius
C. diameter
d. secant
59. IF <BAC= 60°, then BC=
a. 60
b. 30
c. 90
d. 100
60. IF DC = 120, then <DPC =
a. 120°b. 60°
c. 100° d. 90°
