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    				| 1. | In Fig. 9.22, ABCD is a quadrilateral and `B E || A C`and also BE meets DC produced at E. Show that area of `DeltaA D E`is equal to the area of the quadrilateral ABCD. | 
| Answer» Lets proof BE||AC and take other things given. area(ABCD)=area(ACD)+area(ABC) area(ADE)=area(ACD)+area(AEC) So, area(ABC)=area(AEC) According theorem 9.2 BE||AC. | |