Concrete repair for sidewalk corner

[MerlinsBeard]

I have a bit of a nicked sidewalk corner from lawnmower. For years I’ve avoid damaging it at all but there is a triangle section of grass that I usually avoid the corner by tilting the mower just right and finally it caught up with me.

I decided to hack out that triangle next to the flower bed (in hindsight I should have done it years ago). Now I’m looking how best to repair to make it look decent. I’m looking at quikrete cement and their bonding adhesive. I have an edger that matches the rounded curve pretty closely, but how to use it well is not very obvious. Probably need a margin trowel too. How would you approach this repair?

 

[The Cobbler]

you won't get anything to stick long term. I would leave it, let it blend from weather and not worry about it