Key learning points

1. You can identify an arithmetic sequence by checking for a common difference between terms.
2. You can identify a geometric sequence by checking for a common ratio between terms.
3. You can identify a special number sequence if you can identify how to generate the sequence.

Keywords

• Arithmetic/linear sequence - An arithmetic (or linear) sequence is a sequence where the difference between successive terms is constant.

• Geometric sequence - A geometric sequence is a sequence with a constant multiplicative relationship between successive terms.

• Triangular - A triangular number is a number that can be represented by a pattern of dots arranged into an equilateral triangle. The term number is the number of dots in a side of the triangle

Common misconception