5!x4!=2880 n<span>! is the factorial function</span>
Answer:

Step-by-step explanation:
Circle F and J are congruent.

Given that: m∠DFE = 80°
DFE is the central angle of the circle F.
The measure of arc GH is equal to the central angle of Circle J.
Since both circles are congruent

The measure of arc GH is 80 degrees.
Answer:
not enogugh information
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
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