Circles

No

A tangent cannot be drawn through a point inside a circle; all lines through an internal point will intersect the circle at two points.

The single point where the tangent touches the circle

The point of contact is the unique point where the tangent line touches the circle.

Only one tangent can be drawn

When a point is on the circle, only one tangent can be drawn at that point.

A line that intersects the circle at two points

A secant is a line that crosses through the circle, intersecting it at two distinct points.