Ascending Triangle: An ascending triangle is a breakout pattern that forms when the price breaches the upper horizontal trendline with rising volume. It is a bullish formation. The upper trendline must be horizontal, indicating nearly identical highs, which form a resistance level. The lower trendline is rising diagonally, indicating higher lows as buyers patiently step up their bids. Eventually, the buyers lose patience and rush into the security above the resistance price, which triggers more buying as the uptrend resumes. The upper trendline, which was formerly a resistance level, now becomes support.