Answer: D: Columnar monuments were used only by the Romans until the 14th century.
Explanation:
Answer:
D. Shape
Explanation:
All of the other options you wouldn't really describe as enclosed spaces where lines meet, so I'd say the most reasonable answer is D, because when you think about it you realize if you do draw lines that meet somewhere you can call it a shape.
Hope this helps ^-^
The answer is B none of the others would require that much thinking