Respuesta :
Answer:
detail in steps
Step-by-step explanation:
as illustrated
AB = AP + BP
CD = CR + DR
AD = AS + DS
BC = BQ + CQ
while AP = AS BP = BQ CQ = CR DR = DS
AB + CD = AP + BP + CR + DR
AD+BC = AS + DS + BQ + CQ
∴ AB+CD=AD+BC

Answer:
detail in steps
Step-by-step explanation:
as illustrated
AB = AP + BP
CD = CR + DR
AD = AS + DS
BC = BQ + CQ
while AP = AS BP = BQ CQ = CR DR = DS
AB + CD = AP + BP + CR + DR
AD+BC = AS + DS + BQ + CQ
∴ AB+CD=AD+BC