76 Dots = 77 Toothpicks = 78 Toothpicks = 7n+6 79 Yellow tri = 80 Squares = [(n^2)+7n+8]/2 (n^2)+4n-1 3^(n-1) (n^2)+n-1 Green tri = Triangles = [(3^(n-1))-1]/2 2[(n^2)+2n-2] Patterns 81 – 100 81 Circles = 2n-10 82 Legos = 2n+1 83 Legos = 3n 84 Legos = 2n-1 85 Circles = (2n^2)+2n 86 Circles = 87 Cubes = 88 Tori = (2^n)-1 89 Square pyramids 90 Crystals = (n^2)+8n+4 [-5+3(5^n)]/10 = [(5^n)-1]/4 [-5+2(4^n)]/3 91 92 Honeycombs = 93 Total honeycombs = 94 Houses = 2n-1 95 Blocks = n^3 (3n^2)-3n+1 (21n^2)-57n+43
76 Dots = [(n^2)+7n+8]/2 77 Toothpicks = (n^2)+4n-1 78 Toothpicks = 7n+6 79 Yellow tri = 3^(n-1) Green tri = [(3^(n-1))-1]/2 80 Squares = (n^2)+n-1 Triangles = 2[(n^2)+2n-2] Patterns 81 – 100 81 Circles = 2n-10 82 Legos = 2n+1 83 Legos = 3n 84 Legos = 2n-1 85 Circles = (2n^2)+2n 86 Circles = (n^2)+8n+4 87 Cubes = [-5+3(5^n)]/10 88 Tori = (2^n)-1 89 Square pyramids = [(5^n)-1]/4 90 Crystals = [-5+2(4^n)]/3 91 92 Honeycombs = (3n^2)-3n+1 93 Total honeycombs = (21n^2)-57n+43 94 Houses = 2n-1 95 Blocks = n^3
Equations-KEY-new.docx