Recall the property for adjacent angles ina parallelogram.
A rhombus is a square if its al angles are right angle.
Simplify the given ratio, then use the formula of perimeter of a parallelogram in order to find the length of each side of a parallelogram.
Recall properties of square,rectangle, rhombus
Recall properties of rhombus and square
(iv) What do we know about the angles of a rectangle? Does it go with parallelograms as well?
A parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides.
What do we know about the sides of a parallelogram?
Sum of all angles of a quadrilateral is 360˚
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