Question

which figure represents an undefined term?

Explanation:

In geometry, the three undefined terms are point, line, and plane. A line is defined as a straight path that extends infinitely in both directions. The first figure (a ray starting at \(X\) and passing through \(Y\) with an arrow indicating it extends infinitely in one direction) is not an undefined term. The second figure (a line - segment from \(X\) to \(Y\)) is a defined term (has two endpoints). The third figure (two rays from \(X\)) forms an angle (a defined term). The fourth figure (a straight path with arrows at both ends, passing through \(X\) and \(Y\)) represents a line, which is an undefined term.

Answer:

The fourth figure (the one with arrows at both ends passing through \(X\) and \(Y\)).