Question -
Answer -
Given: Here in the question it is given that
(1) ABCD is a Parallelogram
To Prove :
(1)
(2)
(3)
(4)
Construction: Draw
Calculation: We know that formula for calculating the
Area of Parallelogram = base × height
Area of paralleogram ABCD = BC × AE (Taking base as BC and Height as AE ……(1)
We know that formula for calculating the
Area of ΔADC =
Base × Height 
(AD is the base of ΔADC and AE is the height of ΔADC) =
Area of Parallelogram ABCD (from equation1)Hence we get the result
Similarly we can show that