A double inclined plane that moves is commonly called a wedge.

Here's why:

* Double Inclined Plane: It refers to the two sloping surfaces that form the wedge.

* Moves: This describes the key function of a wedge - it's designed to be driven or pushed into an object, causing it to split or move.

Examples of wedges:

* Axe: The blade of an axe is a wedge that splits wood.

* Knife: The blade of a knife is a wedge that cuts through food.

* Doorstop: A doorstop is a wedge that prevents a door from closing.

* Chisel: A chisel is a wedge that carves wood or stone.

Let me know if you have any other questions!