1) 12, 5, 20, X, 18, 4 What is the value of X? 2) HIJKLMNO is the chemical formula for? 3) Draw a square with three lines a) The edge of the paper does not constitute a 'side' of the square. You cannot bend a line into an 'L' shape to make two sides. c) You can either draw & scan your answer, use 'Paint' or similar or use dots & dashes to draw the solution.