I want to know the answer to the following question:
What is the penalty area marked by?
All the background I'm provided with is that "This area is marked by the goal line, two lines starting on the goal line 16.5 m (18 yd) from the goalposts and extending 16.5 m (18 yd) into the pitch perpendicular to the goal line, and a line joining them.". Is that enough to answer the question?