What is the same as 2 groups of 3 triangles?

A) 2x3 triangles = 6 triangles

B) 4 groups of 6 triangles

C) 2 triangles + 2 triangles + 2 triangles = 6 triangles

D) 3 x 6 triangles = 18 triangles
Help

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?