1MA0 Foundation March 2013 Paper 2 Q2
2 Here are some patterns made from triangles.
(a) Complete the table.
(1)
| Pattern number | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| Number of triangles | 2 | 4 | 6 |
(b) How many triangles are needed for Pattern number 12? (1)
Luke says that Pattern number 40 has 82 triangles.
(c) Luke is wrong.
Explain why. (1)
Explain why. (1)
| Answer | Mark | Notes |
|---|---|---|
| 8, 10 | 1 | B1 cao |
| Answer | Mark | Notes |
|---|---|---|
| 24 | 1 | B1 cao |
| Answer | Mark | Notes |
|---|---|---|
| reason | 1 | B1 for a valid reason that demonstrates the understanding that the number of triangles is twice the pattern number |