I believe you only need to know one angle.
For example, if you know angle 1, you can calculate angle 3. Angle 2 = angle 3 and angle 4 = angle 1.
Also, Angle 5= angle 1 and so on...
1 radian
because s= r × angle measurement in radian
we have s= arc , r = radian so we got the value
7-2c= c - 2 this is the answer
Answer:
9.25 or or 9 1/4
Step-by-step explanation: