Forward Rate Agreement replication

Hello,

Can someone explain to me precisely pls, why a long position in a Forward Rate agreement = Long IR Call + Short IR Put?
Thank you

Draw the diagram of a call
Draw the diagram of a put
Draw the diagram of a call and a put on the same chart
Draw the diagram of a long FRA

Do they look the similar?

Get out excel.
Pick a strike rate say 5%
Work out the payoffs of combination calls and puts under different interest rates
Do the same for FRA
Do they look similar?

Yes, they look similar. It’s clear now.
Thank you.