First, the basic concept triangle shape often appears in the rest stage of the stock price. In this form, the price basically fluctuates horizontally, and the amplitude is getting smaller and smaller. During this period, at least four local inversion points are needed, which can be divided into symmetrical, ascending and descending triangles from the directions of the two sideline lines. Diffusion triangle can be classified as the fourth kind of triangle, while convergence triangle and diffusion triangle can form a diamond (bear shape). Take symmetrical triangle as an example. In the process of rising, the stock price temporarily ended after reaching point A, and then turned upward when moving in the opposite direction to point B. However, the stock price did not cross the resistance of point A, but an inflection point appeared at the lower point C, while the retracement low point stopped falling and stabilized at point D higher than point B. During this period, the trading volume gradually shrank, and the AC connection line and BD connection line also crossed somewhere on the right, forming the embryonic form of symmetrical triangle.

Second, the completion and confirmation of the form With the passage of time, when the stock price decisively closes outside the form, that is, when it breaks through a certain sideline, the form will be declared complete, and this area will also become an important support or resistance in the market outlook, usually continuing the previous movement direction. In a right triangle, that is, an ascending or descending triangle, the upper or lower boundary line is horizontal, which means there is a continuous supply or demand for stock prices at a certain fixed position. Once it breaks through, it shows that the original dominant force has been completely exhausted, so its forecasting function is more clear. This pattern mostly appears in the upward or downward trend, while the diffusion triangle usually appears at the top. As for whether it is necessary to confirm the withdrawal, it is basically the same as other forms.

Third, measure the range and motion mode. Measure the vertical distance from the first low point of the table to the upper edge. Adding or subtracting this height when breaking through is the smallest movement interval, and most of the stock prices will be simply sorted around here; In addition, the parallel lines connected with BD through point A will also limit the excessive movement of the stock price and make the stock price and time reach some harmony, which is particularly prominent in symmetrical triangle.