By using dot \[(\cdot )\] patterns, which of the following numbers can be arranged in all the three ways namely a line, a triangle and a rectangle?

By using dot \[(\cdot )\] patterns, which of the following numbers can

1.	By using dot \[(\cdot )\] patterns, which of the following numbers can be arranged in all the three ways namely a line, a triangle and a rectangle?
A.	9
B.	10
C.	11
D.	12
Answer» C. 11