Figure A:Trend reversal from up to down
Figure A:Trend reversal from down to up
Look at the figure A,Here price first made lower high then breaks the low to make lower low,so break of point B constitutes a change in trend from up to down.In case of figure B price first made lower low.This occurrence of break of support at point B is very often but do not cause any change in trend as there is absence of lower high in this case.However when point D is broken after formation of lower high at E then this constitutes a change in trend from up to down.However it must be noted that whether it is figure A or figure B ,there is no significance of lower high-lower low or lower low-lower high before point X.Except this all down move in existing trend can be treated as correction only and one can look to buy corrections in uptrend without having second guess.
In an uptrend first draw the basic uptrend speed line along the lows, then draw another line parallel to basic uptrend speed line from peak (2).Both line move up to the right, forming a channel. If next rally reaches and backs off from the channel line (4), then a channel may exist. If price then drop back to the original trend line (5), then channel probably does exist. The same holds true for a downtrend direction.