What does Régua Triangular look like on Messenger?

On Messenger it is the design shipped in 1.0, shown above at full size. Older revisions are listed beneath it.

When did Messenger add Régua Triangular?

Messenger first drew Régua Triangular in 1.0, released 1 de junho de 2016.

Meta Platforms, Inc. has shipped 1 version of Régua Triangular. Each is dated, so you can see when the design changed.

Messenger

Meta Platforms, Inc. has drawn Régua Triangular once. Every revision Messenger has shipped is below, newest first.

What does Régua Triangular look like on Messenger?: On Messenger it is the design shipped in 1.0, shown above at full size. Older revisions are listed beneath it.
When did Messenger add Régua Triangular?: Messenger first drew Régua Triangular in 1.0, released 1 de junho de 2016.
How many times has Messenger redrawn Régua Triangular?: Meta Platforms, Inc. has shipped 1 version of Régua Triangular. Each is dated, so you can see when the design changed.