Final answer:
A flying buttress is a stone structure that extends from a wall and employs an arch to focus the strength of the buttress's support at the top of the wall. It is used in Gothic architecture to transfer weight loads from roofs and upper stories to the ground.
Step-by-step explanation:
A stone structure that extends from a wall and employs an arch to focus the strength of the buttress's support at the top of the wall is called a flying buttress. Flying buttresses are used in Gothic architecture to transfer weight loads from roofs and upper stories to the ground. They project from the walls to a foundation, supporting the weight of the high walls by carrying the pressure of the lateral thrust and stabilizing the walls.
A flying buttress is a stone structure that extends from a wall and employs an arch to focus the strength of the buttress's support at the top of the wall. It is used in Gothic architecture to transfer weight loads from roofs and upper stories to the ground. Flying buttresses are used in Gothic architecture to transfer weight loads from roofs and upper stories to the ground.