Question

A line segment AB intersects a circle at two distinct points C and D as it passes through its centre, as shown in the figure. The line, whose segment is AB, is a:

• A. Secant
• B. Chord
• C. Diameter
• D. Tangent

Answer 1

The correct option is A

Secant

Any line that intersects the circle at two distinct points is called a secant. The line, whose segment is AB, intersects the circle at two points C and D as it passes through the centre. Hence, it is a secant.
The segment of the secant that lies within the circle and whose endpoints lie on the circle is called a chord. In this case, the chord, which is CD passes through the centre. Hence, it is the diameter.