1. Here are two angles and information about each. How many degrees is the open-ness of each angle?
Potentially useful information: ? ? 3.14 C
= 2?r A
= ?r2
m(∠DCE) = ___________ ?
m(∠JRY) = ___________ ?
2. What
is the length (in cm) of 
?
= _____________ cm