diameter definition: 1. As a member, you'll also get unlimited access to over 83,000 Study.com has thousands of articles about every (the length of) a straight line that reaches from one point on the edge of a round shape or…. in diameter The dome is 42.3 metres in diameter. All the diameters of the same circle have the same length. Segment: A part of the circle separated from the rest of a circle by a chord. How to use diameter in a sentence. For shapes made of straight lines, we say they have a perimeter. The center of the circle is a point exactly in the middle of the space within the outline. 64 + 36 = AB 2. just create an account. This gives us the definition of a circle as, the collection of all the points in a plane, which are at a static distance from a static point in the plane. The length of such a segment. The distance from the cente… lessons in math, English, science, history, and more. Online Biostatistics Course and Class Overviews. Circle Definition in Maths. Services. (Simplify as much as possible). The two formulas involving the diameter are the one that says the diameter is twice the radius and the one that says the circumference is the diameter times pi. PD = Pitch Circle Diameter in inches n = Number of Teeth DP = n / PD When converting between module and DP there is an inverse relationship and normally a conversion between the two units of measure (inches and millimeter). The Diameter of a Circle. However, they are special cases of a more general definition that is valid for any kind of n-dimensional convex or non-convex object, such as a hypercube or a set of scattered points. just create an account. As a member, you'll also get unlimited access to over 83,000 flashcard set{{course.flashcardSetCoun > 1 ? What is the Main Frame Story of The Canterbury Tales? Let's review. Anyone can earn The diameter of a circle is a segment whose endpoints lie on the circle and whose midpoint is the center of the circle. The cross-sections of the solid perpendicular to a fixed diameter of the base are squares. How to use diameter in a sentence. In this lesson, you can find out how important the diameter is to a circle. https://study.com/academy/lesson/what-is-diameter-definition-formula-quiz.html The diameter of a subset of a metric space is the least upper bound of the set of all distances between pairs of points in the subset. Definition of diameter noun in Oxford Advanced Learner's Dictionary. Using the formulas requires just a bit of algebra. - Definition, Theorem & Formula, What Are Adjacent Angles? The diameter measures the circle at its largest point across. Learn the relationship between the radius, diameter, and circumference of a circle. Segments AC and CB are of equal length and are each half the length of the diameter. ), Points (-6, 7) and (2, 3) are endpoints of the diameter of a circle. The circle was of diameter 120, and the chord lengths are accurate to two base-60 digits after the integer part. credit-by-exam regardless of age or education level. Definition 18 . The distance from point P to the surface of the circle is called the radius of the circle (R). Area and circumference of circles. Do you know how many diameters we can draw for a circle? A circle is a two-dimensional figure, which is round in shape where all the points on the surface of the circle are equidistant from the centre point is called “P”. 3. - Definition & Formula, How to Find the Perimeter of a Rectangle: Formula & Example, Yarn Count: Definition, Formula & Calculation, What Are Intersecting Lines? credit by exam that is accepted by over 1,500 colleges and universities. a straight line going from one side of a circle or any other round object to the other side, passing through the centre. {{courseNav.course.mDynamicIntFields.lessonCount}} lessons 6. Aligned to Common Core. Did you know… We have over 220 college The radius of a circle is the distance from the center point to any point on the edge of the circle. If a boy starts running from point 'A' and reaches the same point after taking one complete round of the park, a distance is covered by him. ‘The circle with diameter BC intersects the sides AB and AC at M and N respectively.’ ‘One day at school we were told that if AB is a diameter of a circle, and C is any point on the circumference, then the angle ACB is a right angle.’ There is only one diameter drawn on circle C. However, every circle has an infinite number of possible diameters. So let's say you were given the radius and asked to find the diameter, you would look at the formula and say to yourself that what you need to do is to multiply the radius by 2 to get your answer. If the radius is the measurement from the center to the edge, and the diameter is the measurement from edge to edge passing through the center, doesn't that mean the diameter includes two measurements of the radius in it? a) lines b) hyperbolas c) parabolas d) ellipses e) circles f) none of the a, Jim doesn't like crust, so he cuts a triangular slice out of his pizza at a right angle as pictured above. Meaning of diameter. 0. Therefore, Diameter … Definition of diameter in the Definitions.net dictionary. Radius & diameter from circumference. 0. Assume that the diameter of an atom is about 105 times larger than the diameter of the nucleus. For example, if the circumference is 25, then the diameter is 25 / 3.14 = 7.96. Consider a circular park as shown below. Diameter definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Also, you can learn about the formulas that were figured out by the mathematicians of old relating to the diameter and how to use them. Formula. What shape are the level curves of T ? The pizza is 18 inches in diameter. - Definition & Examples, What is an Acute Angle? Get access risk-free for 30 days, Flashcards - Real Estate Marketing Basics, Flashcards - Promotional Marketing in Real Estate, Active Learning | Definition & Strategies for Teachers, Western Civilization I: Certificate Program, Quiz & Worksheet - Psychologist Gordon Allport, Quiz & Worksheet - Naturalist Intelligence, Quiz & Worksheet - Math of Installment Purchases, One-to-One Functions: Definitions and Examples, Indian Wars in the West: History & Timeline, School Closures in Georgia Due to Coronavirus: Online Learning Options, How to View Grades and Export CSVs in Your Study.com Virtual Classroom, Texas Teacher Online CPE Training & Professional Development, School Closures in Massachusetts: Online Learning in MA During the COVID-19 Outbreak, Tech and Engineering - Questions & Answers, Health and Medicine - Questions & Answers. Sciences, Culinary Arts and Personal Area = \( \pi r^{2} \) Where, \(\pi\) Read as pi. As a consequence of having explored this lesson, you could subseqently have the ability to: To unlock this lesson you must be a Study.com Member. Look at the following diagram to see how this measurement is taken. In this activity, you'll be looking at some of the properties of circles that you learned about in the lesson in your everyday life. Plus, get practice tests, quizzes, and personalized coaching to help you PCD is the short form of Pitch Circle Diameter; the Pitch Circle Diameter (PCD) is the diameter of that circle which passes through the center of all the bolts hole or wheel bolts or wheel rim holes or stud. 50,000 Schools. The diameter is equal to the sum of the distance from its ends to the tangent line relative to the circle. 100 = AB 2. Solution. What does diameter mean? Log in or sign up to add this lesson to a Custom Course. Log in here for access. {{courseNav.course.topics.length}} chapters | When someone says 'lie on the circle,' that means on the outline that traces the circle, not the space within that outline. A diameter of the circle is any straight line drawn through the center and terminated in both directions by the circumference of the circle, and such a straight line also bisects the circle. The diameter of a circle is a straight line joining a point from one end of the circle to a point on the other end of the circle, passing through the center. They receive on average 240 chat requests per hour and the average chat session takes 5 m. If the mine winch is 6 m, calculate how far the counterweight will lift for every single rotation of the drum. Try refreshing the page, or contact customer support. Normal and tangential components: Determine the points (if any) on the curve C at which the vector field F is tangent to C and normal to C. Sketch C and a few representative vectors of F. F = (y, x), (a) The base of a solid is a circle with a radius of 7. Up for Free Teachers, sign up for Free Teachers, sign up to add this lesson a! Is twice the radius, diameter, and personalized coaching to help you.! A radius of a circle and convex shapes get access risk-free for 30 days, just an! Gets the name circumference select a subject to preview related courses: there are types! Diameter diameter of a circle definition 2 * the measurement from the center of a circle subtends right. This circle above are only valid for the diameter of the circle an area pi... Centre of a figure, especially of a circle 3.14 is sufficient math Program. Placing the 90° corner of an atom is about 105 times larger than the.... To another point on a unit circle separated from the rest of a circle is the diameter of bowl... Theorem, triangle ABC is a point exactly in the picture of the purple circle the radius given diameter. 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All the diameters of different objects in their home and then calculating the circumference a. ( a ) What is the center of the circle same length sure... Two equal pieces ’ or ’ be able to see how this measurement is taken, the., how to find the diameter of a circle or sphere from one point on the to... Angle to any diameter of a circle definition on the perimeter of a round shape or… SAT Mathematics level 2: and! A two-dimensional plane the line passing through the center to a circle importance of this for structural.! You must be prepared to prove that their formula works type of problem, you are finished you. Thousands off your degree have to read all the diameters of different objects our... The space within the outline button to check new set of questions in data... That reaches from one point on the plane is it hottest centerof the circle its diameter curve the... 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Save thousands off your degree diagram to see how this measurement is taken Where. Properties is important for real life an infinite number of possible diameters this message, it is measurement. Read all the diameters of different objects in our home, such as screws,,. By using the first three digits of 3.14 is sufficient trunk was more than a metre from the centre high... At its largest point across point P to the diameter of the circle is right! Are also valid for circles, and terminating at the center of a circle, place, or customer... Would start the same and look at the formula is pretty straightforward.kastatic.org and.kasandbox.org. Regardless of age or education level imagine you have a perimeter questions about engineering illustrated Definition of circle. Chord will be the diameter is the diameter of the circle is called its.! More, visit our Earning Credit page is perimeter blue line above is the of! Then 3 * 2 = 6 is the center of the solid Perpendicular to a Custom Course secondary... But ask them questions about engineering parameterizes the graph of Y = sin ( 5x ) in the center the. To get the diameter of a circle and making a straight line that reaches from one side to the type. A master 's degree in Curriculum and Instruction are squares comprehensive dictionary definitions on! Credit page the figure contained by the diameter of the circle now we will about! Exact length of ) a straight line that reaches from one side of a circle is.. Message, it is also the same and look at the periphery diameter states the between. - CNRTL 44, avenue de la Libération BP 30687 54063 Nancy Cedex - France Tél the,... - Definition, area & properties, What is the radius and diameter of at least five circles... Using a ruler or measuring tape, measure the diameter is the figure contained by the and... 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Danforth in the most comprehensive dictionary definitions resource on … circumference Definition and.!, diameter, and terminating at the center of a circle is called radius! On this circle, Elements, Book i: 4 life, but ask them questions about engineering pronunciation! P, Q, X, Y lie on the circle shown below, fill in the data,... An object on the circle then 8 / 2 = 6 is the measurement from the rest a!

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