Display Title
Definition--Circle Concepts--Diameter
Display Title
Diameter
Topic
Circles
Definition
The diameter of a circle is a line segment that passes through the center and has its endpoints on the circle, calculated as D = 2πr.
Description
The diameter is a fundamental concept in geometry, representing the longest distance across a circle. It is widely used in fields such as engineering, design, and manufacturing, where precise measurements of circular objects are required. The formula
D = 2πr
illustrates the relationship between the diameter and radius, highlighting the proportional increase of diameter with the radius. In mathematics education, understanding the diameter is essential for students as it provides a basis for exploring more complex topics like circumference and area, and helps in developing spatial reasoning and problem-solving skills.
For a complete collection of terms related to Circles click on this link: Circles Collection.
| Common Core Standards | CCSS.MATH.CONTENT.HSG.C.A.2, CCSS.MATH.CONTENT.HSG.C.A.1, CCSS.MATH.CONTENT.HSG.C.A.3, CCSS.MATH.CONTENT.HSG.C.A.4, CCSS.MATH.CONTENT.4.MD.C.5.A, CCSS.MATH.CONTENT.7.G.B.4 |
|---|---|
| Grade Range | 4 - 8 |
| Curriculum Nodes |
Geometry • Circles • Definition of a Circle |
| Copyright Year | 2014 |
| Keywords | defnitions, geometry, circle |
