point of tangency

Noun

(geometry) The point where a tangent line and its curve meet

Japanese Meaning

接線と曲線が接する点

At the point of tangency, the tangent line just touches the circle without crossing it.

接線と曲線が接する点では、接線は円に触れるだけで交差しません。

Sense（1）

(geometry) The point where a tangent line and its curve meet

points of tangency

（ plural ）