| Subject | English | Russian |
| math. | a bisector bisectrix of a the triangle is the segment of the corresponding angle bisector bisectrix from the vertex to the point of intersection with the opposite side | биссектриса треугольника |
| math. | the vertex of an angle | вершина угла |
| math. | if an angle is named using letters; the middle letter denotes the vertex of the angle | вершина угла |
| comp. | vertex of the angle | вершина угла |