Open vs opened in English

The door is open or opened. Which word should be used after the linking verb? Many students don't know the difference and use it interchangeably.

The gospel-treasury opened: 1679 : Everard, John, 1575?-1650?. : Free Download, Borrow, and Streaming : Internet Archive

Open Interest: Definition, How It Works, and Example

Opened Old English Book's Pages Blurred Close-up Background Stock Photo, Picture and Royalty Free Image. Image 136410126.

VSCode How can I change from English to English - The freeCodeCamp Forum

Open x Opened: Quando utilizar - English Experts

Page:A Hebrew and English Lexicon (Brown-Driver-Briggs).djvu/1133 - Wikisource, the free online library

What Is the Difference between Closed and Open Circulatory System?

Crossing Selected Pack English: Ready to pull some hits or god pack? Every packs includes a hit! Includes: 10 cards. Within these 10 cards there are 9

Crossing Selected Pack English (Opened on Live)

OPEN and OPENED - Our English Blog

The Shotgun Band Opens for Charlie Daniels in Independence…

MiniVAN Archives – Public Data Lab

Opened old english book's pages blurred close-up background Stock Photo - Alamy