(i)    Divide the following polygons (Fig 11.17) into parts (triangles and trapezium) to find out its area.

            

FI is a diagonal of polygon EFGHI         NQ is a diagonal of polygon MNOPQR

Answers (1)

(i)

Area of  polygon EFGHI = area of \triangleEFI + area of quadrilateral FGHI

Draw a diagonal FH 

Area of  polygon EFGHI = area of \triangleEFI + area of \triangle FGH + area of \triangleFHI

Area of polygon MNOPQR = area of quadrilateral NMRQ+area of quadrilateral NOPQ

 Draw diagonal NP and NR .

Area of polygon MNOPQR = area of \triangleNOP+area  of \triangleNPQ +area of \triangleNMR +area of \triangle NRQ

 

 

 

                    

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