Answer:  The sides of the triangle on the drawing should be 6 inches, 8 inches, and 9 inches.
Explanation:
Given: A triangle with sides 12 feet, 16 feet, and 18 feet on a drawing where 1 inch = 2 feet. 
Then, 1 feet of original triangle =
 inch on drawing.
 inch on drawing.
Now, the sides of the triangle on the drawing are:-
12 feet =
 
 
12 feet =
 
 
12 feet =
 
 
Hence, the sides of the triangle on the drawing should be 6 inches, 8 inches, and 9 inches.