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Because it is a line through the center of the circle and it is impossible for a line that is not through the center to be longer than one that is through the center.

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Q: How do you know that the diameter in a circle is the longest possible chord in the circle?
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Related questions

When is a Chord a diameter?

The longest chord of a circle is its diameter


What is the longest chord of any circle?

The longest chord of any circle is one that passes through the center; it's the diameter of the circle. And it's that simple. Draw any diameter, which is a segment through the center of a circle, and you have the longest chord.The longest chord in a circle is its diameter


What is the longest chord on a circle?

diameter of a circle


What is the longest chord of a circle know as?

The largest chord of a circle is its diameter


Can a chord of a circle ever be longer than the diameter?

The longest chord in a circle is the diameter. So, no.


What is the longest chord of a circle?

Its diameter


What is diameter in geometry?

diameter refers to the area across a circle through its center. it is the longest chord possible for any given circle.


What is the longest chord that can be drawn on a circle?

The diameter (across the widest part) is the longest chord that can be drawn on a circle.


Is a segment with endpoints on a circle?

A chord. The longest possible chord is one that goes through the center of the circle. That has a special name ... it's called the 'diameter' of the circle.


What is the name of the chord that is a diameter?

The diameter of a circle could also be called the longest chord in that circle.A chord is any straight line that connects two points on a curve. A circle has a near infinite number of chords that can be drawn between any two points around its circumference.Any chord that passes through the middle of the circle, making it the longest chord possible in the confines of the circle, is also known as the diameter of the circle.So, every diameter is a chord, but not every chord is a diameter.


Can a chord be in the middle of a circle?

Not sure what you mean by "in the middle of a circle". A chord must have each of its ends on the circumference of the circle. If a chord is such that is passes through the centre point of the circle, it is (the longest chord possible and is) called a diameter. Or to put it another way, a diameter of a circle is a chord which passes through the centre point of the circle.


What is the longest chord in any circle?

The diameter