* \brief Feature for creation of a new constraint which defines
* a radius of a circle or an arc of circle
*
- * These constraint has two attributes:
+ * This constraint has two attributes:
* SketchPlugin_Constraint::VALUE() (radius), SketchPlugin_Constraint::ENTITY_A() (a circle)
*/
class SketchPlugin_ConstraintRadius : public SketchPlugin_ConstraintBase