I'm making a design with the following shape:
I'm trying to make both sides of this diamond shaped object have an identical angle (using the Anchor Point Tool).
I've tried to manually replicate it on both sides, but haven't been successful.
If it's already a vector shape, cut it in half by deleting the anchors on one side, reflect a copy of what's left, and rejoin to make the sides symmetrical.
If it's not a vector object.... redraw half the shape, tracing the original, then use the Reflect Tool and click the
Copy Button. Then join the two halves.
To the best of my knowledge, there's no mechanism to symmetrically edit more than one existing anchor point, or existing Bezier handle. There are perhaps some third-party plug-ins which used to do that (i.e. Better Handles), but I don't know if they still exist for CC versions.