By both methods the same gain is observed if the operation is mounted in short:
1) the size of the base of the triangle is the gain from the sail that breaks the lower line.
2) by extending a line parallel to the line that is in favor of the trend, in this case it is the upper line and just crosses the vertical line of the movement of the trend starting from the sail that breaks the infertory line of the triangle. The value is exactly the same: 12,12%, where by both methods the take profit is crossed.

I apologize, because I had a confusion believing that I was in the cryptocurrency market and I made a symmetric triangle form in the stock market.
Chart Patterns

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