| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | angle | mathematics education in the United States | Basic concept taught in early education, used in geometry and trigonometry | 1 |
| 2 | quadrant | mathematics education | In mathematics education, a quadrant is one of the four regions into which the x-y plane is divided by the x-axis and y-axis. | 1 |