I myself am not an expert even have full knowledge in trading, but I try to share what I know about it. Today I want to talk about what a range is. What is it?

The range is between the largest and smallest numbers in the set.

Bitcoin's price is now range between 19890 and 17920. 

When the market makes a Range, it is not good to put a position, either Buy it or SELL, unless you see a good sign indicating that you should buy or sell. This is using your familiar Indicators.

Within the range is good to do an analysis of the market process.

  If the market moves out of the zone of the triangle it means that the range is over, either the market above the Resistance or it is below the Support. If it is above the resistance, it indicates that the market will go up, if it is below the support, it will go down.

That is the little knowledge I have that I share. Your additional will be appreciated in the comments below.