Removing edges without destroying the surrounding geometry is called "dissolving” edges in Blender. It's an essential skill to learn in 3D modeling. Here... | By Blender Secrets | Facebook
![modeling - How to delete polygons/edges/vertices at once, without selecting the corresponding item in the menu on the X key? - Blender Stack Exchange modeling - How to delete polygons/edges/vertices at once, without selecting the corresponding item in the menu on the X key? - Blender Stack Exchange](https://i.stack.imgur.com/T6Noj.png)
modeling - How to delete polygons/edges/vertices at once, without selecting the corresponding item in the menu on the X key? - Blender Stack Exchange
![modeling - How to delete polygons/edges/vertices at once, without selecting the corresponding item in the menu on the X key? - Blender Stack Exchange modeling - How to delete polygons/edges/vertices at once, without selecting the corresponding item in the menu on the X key? - Blender Stack Exchange](https://i.stack.imgur.com/DSlG8.png)