# Collapse The **Collapse** tool reduces geometry by merging selected vertices, edges, or faces into a single point. It automatically collapses the selection to its geometric center, simplifying topology while preserving overall mesh structure. Select the vertices, edges, or faces to be collapsed, then press **`X`** to activate the tool. {% embed url="" %} #### Use cases * Reducing unnecessary geometry for optimization * Merging edges or vertices to clean up topology --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.vectary.com/documentation/design-process/edit-mode/collapse.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.