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conclusion..
area of triangle 1 =area of triangle 2 or area of triangle 1=1/2area of parallelogram
But area of parallelogram =base ×height
therefore,area of triangle =1/2×base×height
area of triangle 1 =area of triangle 2 or area of triangle 1=1/2area of parallelogram
But area of parallelogram =base ×height
therefore,area of triangle =1/2×base×height
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