true or false 2. At a given point on a circle, one and only one line can be drawn that is tangent to the circle 3. If two segments from the same exterior point are tangent to a circle, then the two segments are congruent. 4. If a line is tangent to a circle, then it is perpendicular to the radius drawn to the point of tangency 5. An external secant is the part of a secant segment that is outside the circle.
