Descending triangle:

The descending triangle is the inverse of the ascending triangle. It forms when there’s a horizontal support area and a falling trend line drawn across a series of lower highs. In the same way as the ascending triangle, each time price bounces off the horizontal support, sellers step in at lower prices, creating lower highs. Typically, if the price breaks through the horizontal support area, it’s followed by a quick spike down with high volume. This makes it a bearish pattern.