Answer:
rectangle
Step-by-step explanation:
A rectangle has a perimeter of 18 inches.
Answer:
The numbers are: 1 and 3.
Step-by-step explanation:
Let the first number be
and the second number be
.
Given: The difference between twice the number and the second number is
. writing this mathematically,

From the second statement we get:

Solving for
and
we get:

and 
Thus the first number is 1 and the second number is 3.