area and perimeter of rhombus, trapezium, parallelogram
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Perimeter of parallelogram= 2 × (l + b)
Area of the parallelogram = l × h
Perimeter of a rhombus = 4a
Area of a rhombus = ½ × d1 × d2
Perimeter of the trapezium= Sum of lengths of all the sides = AB + BC + CD + DA
Area of the trapezium = ½ × (Sum of lengths of parallel sides) × h = ½ × (AB + CD) × h
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