How to contact android with iPad only

Declan- wrote:

Hi I would like to text an android phone using iMessage with only an iPad.

You would need to have an iphone so you can set up text fowarding as oultined here Forward SMS/MMS text messages from your iPhone to other devices - Apple Support

Declan- wrote:

Hi I would like to text an android phone using iMessage with only an iPad.

That won’t work. You’ll need some other IP-based messaging app, as a device without SMS (or SMS relay via an iPhone) cannot use SMS. I think Signal app will work here as a separate, non-linked device, too.