If the area of the parallelogram is 156 cm 2, then find the length of AL. DL is perpendicular to AB and AB AD 13 cm. Students should always draw figures for better understanding. In the given figure, ABCD is a parallelogram. Also, students should learn all properties of parallelogram and other quadrilaterals also. Note: Students should carefully apply the midpoint formula as there are chances of making plus minus mistakes here. Therefore, midpoint of AC = midpoint of BD. Therefore, midpoint of AC will be equal to midpoint of BD.Īs we have to find coordinates of D, let them be as (x, y). 322, 2003.As we know, diagonals of a parallelogram bisect each other. Given side length b and the diagonals calculate the perimeter, height, area, side length a and angles A, B, C and DĬRC Standard Mathematical Tables and Formulae, 31st Edition New York, NY: CRC Press, p.
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