WaveBasis can detect all of the Elliott Wave pattern types, including Triangles. However, Triangles tend to appear less frequently in automatic wave counts than other types of patterns because their probability tends to be lower in the context of forecasting. So, you will most likely eventually see them in your automatic wave counts.
In any case, however, if you prefer to count a section of a particular chart as a Triangle, you are free to modify automatic wave counts using the wave drawing tools. Learn more about the Wave Drawing Tools.
Also, if you have questions or concerns about a specific chart(s) please feel free to share it with us using the chart-sharing feature. Discover how to leverage the Sharing Charts feature.