Complete the statements regarding the properties and signs of a tangent line to a circle.

Completion of Statements:

• E. Property. A tangent to a circle is _______________ to the radius drawn to the point of tangency. (перпендикулярна)
• Ж. Sign. If a line is perpendicular to a radius and passes through its endpoint, which lies on the circle, then it is a tangent line.

Answer: перпендикулярна