Trapezium
One pair of opposite
sides is parallel.
In quadrilateral ABCD, side
AB is parallel to side CD. Therefore it is a trapezium.
Area of trapezium = ½ (sum of parallel sides) x (distance between parallel side)
Area of trapezium = ½ (AB+DC) x (DH)
In this diagram DH and FG both are distance between parallel line AB and DC
perimeter of trapezium = sum of all sides
perimeter of trapezium = AB+BC+CD+DA
Isosceles trapezium
A trapezium in which non-parallel sides are equal is called isosceles trapezium i.e. if AD=BC then ABCD is trapezium
isosceles trapezium


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