Final answer:
The triangular space of the Lion Gate of Mycenae is formed by the relieving triangle of the wall and is supported by the corbeled arch construction of the doorway.
Step-by-step explanation:
The triangular space of the Lion Gate of Mycenae is formed by the relieving triangle of the wall and is supported by the corbeled arch construction of the doorway.
The relieving triangle is a triangular block of stone that fits into the recess of the corbeled arch and helps redistribute weight from the lintel to the supporting walls. This architectural technique is used to lighten the weight carried by the lintel over the doorway.
The corbeled arch is constructed by offsetting successive courses of stone at the springline of the walls so that they project towards the archway's center from each supporting side. It is often used in conjunction with the relieving triangle to provide structural support.