Princeton Review

Display Title

Definition--Geometry Basics--Diameter

Diameter

Diameter

Topic

Geometry Basics

Definition

The diameter of a circle is the longest distance across the circle, passing through the center.

Description

The diameter is twice the radius of a circle and is a fundamental concept in circle geometry. The formula for the diameter is d = 2r, where r is the radius. Understanding the diameter is crucial for solving problems related to the circumference and area of circles. For example, the circumference of a circle can be calculated using the formula C = πd. This concept is used in various real-world applications, such as engineering and design, to ensure precision and accuracy in circular objects.

Diameter
How are the spokes of a wagon 
wheel related to diameters?

For a complete collection of terms related to Geometry Basics click on this link: Geometry Basics Collection

Common Core Standards CCSS.MATH.CONTENT.HSG.CO.A.1
Grade Range 5 - 9
Curriculum Nodes Geometry
    • Circles
        • Definition of a Circle
Copyright Year 2022
Keywords definition, geometry