4. Upgrade to remove ads. When a quadrilateral in inscribed in a circle, it is called a cyclic quadrilateral. Proof: (i) In quadrilateral ABED, AB = DE and AB || DE | Given ∴ quadrilateral ABED is a parallelogram. in the diagram below of parallelogram abcd ab cd bisects . | ∵ A quadrilateral is a parallelogram if a pair of opposite sides are parallel and are of equal length (ii) In quadrilateral BEFC, BC = EF and BC || EF | Given ∴ quadrilateral BEFC is a parallelogram. If BC and AD were each doubled and BE was reduced by 50 percent, how would the area of Transcript. i) As AB // CD and Lego Powered Up Set, Go To Sleep Roblox Id, 14 Oz Can Tomatoes In Ml, 4 Wheeler For Adults, Thoreau Believes That Humans, Gold's Gym Trainer 520 Treadmill,