They're definitely worn, you can see the valleys are getting elongated and the peaks are getting thinner. I always found it helpful to find a picture of a brand new sprocket to compare with.
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If you can, it’s best to replace both front and rear sprockets and chain together.
Also, give your wheel a good inspection. It looks like cracks have formed near the visible bolts:


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That trucker is definitely toast. Time for replacement.
Is the chain anywhere near needing replacing (any stiff links)? Usually you wouldn't change the sprocket until the chain needs to be replaced.
I think I have read in the past that you should always do them both because as the chain stretches the sprocket tends to wear to match the stretch, but I have reused sprockets without any problems.
Anyways it looks fine to me.
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