17. In the figure below, what is BD?
a. diameter
b. chord
c. radius
d. side
18. BD is 10 cm, what is the measure of RD of?
a. 20 cm
b. 30cm
c. 40 cm
d. 50 cm
19.Polygons are classified according to the number of sides. What do you call a polygon with 6 sides?
a. decagon
b. hexagon
c. octagon
d. heptagon
20. What is the value of the 6th angle of a hexagon with 122, 123,124, 125, 126,
a. 100
b. 102
c. 105
d. 120
