What is the chord of a circle

The video tutorial explains key concepts in circle geometry, including central angles, radius, diameter, and chords. It begins with defining a central angle and radius, then describes how extending a radius forms a diameter, a special type of chord. The tutorial further defines a chord as a line with two endpoints on a circle and provides examples. Finally, it highlights the diameter as the most notable chord, emphasizing its unique property of passing through the circle's center.

What is a central angle in a circle?

• An angle formed by two diameters

• An angle formed by a radius and a tangent

• An angle formed by two radii

• An angle formed by two chords

How is a diameter different from other chords?

• It is not a straight line

• It is the longest chord and passes through the center

• It does not pass through the center

• It is the shortest chord

Which of the following is a correct definition of a chord?

• A line with both endpoints inside the circle

• A line with no endpoints on the circle

• A line with one endpoint on the circle

• A line with both endpoints on the circle

Which of these is an example of a chord?

• A line segment from the center to a point outside the circle

• A line segment with both endpoints on the circle

• A line segment that does not touch the circle

• A line segment that passes through the center and extends infinitely

Why is the diameter considered the most famous chord?

• It is the only chord that does not touch the circle

• It is the only chord that can be drawn

• It is the longest chord and passes through the center

• It is the shortest chord