What is ascending Triangle chart pattern

it is a chart pattern where in price is making higher lows and consolidating in a triangular range to breakout, price cannot stay in very confined range forever and it has to breakout to move higher, in this pattern noticeable thing is price hits the same highs many times but fails, but the failure is important, every time it fails it will not break below the previous lows, suggesting that buyers are accumulating price. so positive sign and when it breaks out it will give it will give almost equal quantity of the widest part of the triangle, so congestion will lead to expansion. I think every trader should understand the price behaviour so that they can decipher the meaning of any breakouts,