| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | angle | mathematics education in Western countries | Angles are commonly taught and understood as geometric measurements in degrees or radians, and are a fundamental concept in geometry and trigonometry. | 1 |
| 2 | radius | mathematics education in Western countries | In geometry, the radius is commonly defined as the distance from the center of a circle to any point on its circumference. | 1 |