Delta Connection is obtained when the opposite ends of the three resisors are connected together. Or in other words: The end of each resistor are connected with the starting point of another resistor and the three wires are taken out from the resistor joints.
What you can see from this circuit: In Delta connection the Line Voltage is Equal to the Phase Voltage:
VLine = VPhase
A line current branches out into two phase currents.
ILine = √3 IPhase