Can someone help me please

By the inscribed angle theorem, we have

(where denotes the minor arc AB)

The interior angles of any triangle sum to 180º in measure, so

Use the inscribed angle theorem again to find the measure of arc BC:

Similarly find the measure of arc AC:

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

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step-by-step explanation: