In geometry, a diameter of a circle is any straight line segment that passes through the centre of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle.

Jul 23, 2025 · To calculate the diameter of a circle we use the formula D = 2r. The diameter of any circle is the longest chord of the circle, that passes through the centre of the circle.

Diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circumference of a circle. Learn how to find the diameter of a circle using radius, …

Oct 22, 2025 · From clear definitions and real-life examples to FAQs and a quick quiz, explore everything you need to know about diameter in this guide.

Apr 15, 2025 · The diameter of a circle is the distance straight across the circle from one side to the other at its center. Depending on what other information you have about the circle, there are a few …

The diameter of a circle is the length of the line through the center and touching two points on its edge. In the figure above, drag the orange dots around and see that the diameter never changes.

The meaning of DIAMETER is a chord passing through the center of a figure or body. How to use diameter in a sentence.

Illustrated definition of Diameter: The distance from one point on a circle through the center to another point on the circle. It is also the...

DIAMETER definition: 1. (the length of) a straight line that reaches from one point on the edge of a round shape or…. Learn more.

The diameter of a circle is a line segment that passes through the center of the circle and has endpoints on the circle. Line segment AB above is a diameter for circle O since endpoints A and B lie on the …