# Custom angled windows or facade features Custom angled windows and facade features refer to complex architectural elements that go beyond standard rectangular shapes. This includes unique angles, curved glass, or non-planar surfaces that cannot be modeled using the platform's basic geometry tools. To model custom angled windows or facade features, you must import the 3D geometry from external software, such as Rhino or SketchUp. Within these products, export the file as [gbXML](/user-guide/3d-building.md) and use our import feature to bring the geometry into the platform. --- # 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://docs.betterbuilding.io/support-and-training/other-support/faqs/building/custom-angled-windows-or-facade-features.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.