Respuesta :

CastleRook
Given that the two polygons are congruent then,
AD=SP
plugging in the values we obtain:
3m-9=2m-4
solving for m we get:
3m-2m=-4+9
m=5
thus the value of AD will be:
AD=3m-9=3(5)-9=15-9=6

The answer is AD=6

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