The beaded pattern in this Zulu love letter consists of triangles. Look at the pattern of beads below and answer the questions: a) Complete this table showing the number of beads in each successive layer or triangle: Layer Number of beads 2 (0) 5 3 (0) 4 (0) 5 10 b) Write a formula or rule to represent the relationship between the number of beads and the layer number. c) Use your formula to find the number of beads in the 20th layer (assuming the pattern continues up to 20 layers). Total: 30 marks (6)
