9.1-9.4 quiz

Find the  $AB=75\degree,\ OB\ =\ 6.\ \angle AOB$  

• 75

• 105

• 150

• 285

Find the measure of the arc or central angle indicated. Assume that lines which appear to be diameters are actual diameters.
Find the  $m\angle IHJ$ . 

•  $70\degree$  

•  $66\degree$  

•  $75\degree$  

•  $119\degree$  

1.    In circle N, arc AB = $(2x^2+9x-4)°$   and
 $m\angle N=(x^2+9x+12)°.$    $Find\ the\ m\angle N.$  

•  $4\degree$  

•  $64\degree$  

•  $16\degree$  

•  $25\degree$  

Find the exact circumference of the circle below, if JK=8cm

• $8\sqrt{3}$

• $8$

• $16$

• $60$

arc AB =75, OB = 6. Find the length of arc AB.

• 15.2

• 20.6

• 3

• 7.9

Find the length of radius if given the arc length.

• 6

• 9.5

• 27.1

• 36

1. Find the length of the segment indicated. Round your answer to the nearest tenth if necessary.

(Hint: 30.8 is the DIAMETER)

• 4.2

• 5.5

• 7.3

• 7.1

Find the measure of the arc indicated.

• $84\degree$

• $60\degree$

• $44\degree$

• $57\degree$

Find the measre of the indicated angle.

• $62\degree$

• $91\degree$

• $89\degree$

• $43\degree$

Find the value of x.

• 3

• 11

• 8

• 5