What aspect ratio should the appicon be?

### Type of issue

Missing information

### Description

The dimensions shown here differ from what is in the MAUI template (which is 456 x 456). Two different dimensions are shown on this page, one being a square and another being rectangular.

What dimensions and/or aspect ratio should we be using? If it doesn't matter, please explicitly say so.

### Page URL

https://learn.microsoft.com/en-us/dotnet/maui/user-interface/images/app-icons?view=net-maui-8.0&tabs=android

### Content source URL

https://github.com/dotnet/docs-maui/blob/main/docs/user-interface/images/app-icons.md

### Document Version Independent Id

2fc2b28d-e403-c63e-b7c4-6639fcd05a89

### Article author

@davidbritch

### Metadata

* ID: 2fc2b28d-e403-c63e-b7c4-6639fcd05a89
* Service: **dotnet-mobile**
* Sub-service: **dotnet-maui**