Question

which is true regarding secants and chords?
chords intersect the perimeter of a circle at two points. secants intersect the perimeter of a circle once.
chords intersect the perimeter of a circle at one point. secants intersect the perimeter of a circle twice.
chords and secants intersect the perimeter of a circle twice. chords are segments entirely within a circle, while secants are lines or rays that extend through a circle.
chords and secants intersect the perimeter of a circle twice. chords are lines or rays that extend through a circle, while secants are segments entirely within a circle.

Explanation:

A chord is a line - segment that connects two points on the circumference (perimeter) of a circle. A secant is a line (or a ray, which is a part of a line) that intersects the circle at two points. So, both chords and secants intersect the perimeter of a circle twice. Also, a chord is a segment (a part of a line with two endpoints) that lies entirely within the circle, while a secant is a line (or ray) that extends through the circle (it has infinite length in one or both directions beyond the circle).

Answer:

Chords and secants intersect the perimeter of a circle twice. Chords are segments entirely within a circle, while secants are lines or rays that extend through a circle.