You can put whatever you want inside the triangle (including more triangles) as long as you fill up that single triangle base.
This started out feeling quite daunting and I wish I felt like I had more time to learn how to make a triangle exactly the size I want AND how to get my text to fill it just so. I did google how to fill a shape with text, but when I typed it in it came out crookedly instead of aligned with the top of my triangle. So I just pressed Return a lot on centered text and made it fit the best I could. I was inspired by today's Chatty Pad topic. Thanks Jan! @IntenseMagic