By: Kay McInnis. Diameter DIAMETER is the distance across a circle passing through the center point.

Slides:

Advertisements

Similar presentations

Diameter  Any line segment that passes through the center of the circle and has endpoints on the circle.

Advertisements

M5G2 – Students will understand the relationship of the circumference of a circle, its diameter, and pi (pi ≈ 3.14)

Circumference of a Circle Math 10-3 Ch.3 Measurement.

Circles 9.3 Page 532 DiameterIs a segment that passes through the center of the circle and has endpoints on the circle. Segment AC is the diameter. D =

By Maria Bocanegra. The distance around a closed curved circle. WHAT IS CIRCUMFERENCE?

Perimeter Rectangles, Squares, and Triangles Perimeter Measures the distance around the edge of any flat object. To find the perimeter of any figure,

Radius, Diameter, and Circumference of a Circle Lesson 7 (3 rd 6 Weeks) TEKS 6.6C.

1. 2 Circle A circle is the set of all points that are the same distance from a given point called the center.

Circles: Area and Circumference. Definitions Circumference: Distance around the outside of a circle Area: How many squares it takes to cover a circle.

3.4 Area and Circumference 1 Circle A circle is a plane figure that consists of all points that lie the same distance from a fixed point. The fixed point.

  investigate the relationship between the diameter and circumference of a circle.

Chapter 10 Lesson 1: Circles and Circumference Objective: Learn to find the circumference of circles.

Math Circumference of Circles & Area of Circles. Vocabulary A circle is the set of all points in a plane that are the same distance from a given point,

Circles and Circumference Lesson 9-5. Vocabulary A circle is a plane figure that consists of a set of points that are equidistant from a given point called.

Circles and Circumference. Vocabulary A circle is a plane figure that consists of a set of points that are equidistant from a given point called the center.

Circumference and Area: Circles

A Circle is a closed plane figure in which all the points are the same distance from the center. F Center Circle F.

- Segment or distance from center to circle. Objective - To find the circumference of a circle. Circle - The set of points that are equidistant from a.

Warm-Up  Multiply.  1.89 x 97  x 76  x 34  4.38 x 28.

Spring 2007Mrs. Bubello Circumference. Spring 2007Mrs. Bubello Circumference Objectives To identify the parts of a circle. To derive a formula for circumference.

8.7 Circumference and Area of Circles. Definition  A circle is the set of all points in a plane that are the same distance from a given point, called.

AREA OF CIRCLES. REVIEW-CIRCUMFERENCE WORDS: The circumference of a circle is equal to pi times its diameter or pi times twice its radius. Symbols: or.

Circumference and area of circles Pick up your calculator for today’s notes.

A circle is a closed curve in a plane. All of its points are an equal distance from its center.

Circumference of a Circle

Circumference & Area of a Circle

Circles. Center Radius Radii Diameter Chord.

Circumference and Diameter 1/31/2006. Circumference A circle is a shape with all points the same distance from the center. It is named by the center.

Chapter 4 L4-5 Notes: Perimeter. Vocabulary The distance around any closed figure is called its perimeter. P for “Plus” all Sides.

 Radius – The distance from the center of the circle to the endpoint.

Mrs. Planavsky 4 th Grade.  Find the circumference of a circle  Find the measurement of a diameter of the circle.

Warm-Up Find the area: Circumference and Area Circles.

Lesson 8.7 Circumference and Area of Circles Pages

The Circle. The language of circles Circumference: The distance round the circle Circumference: The distance round the circle Diameter: the distance from.

Circumference Lesson #33. What is Circumference? The distance around the outside of a circle is called the circumference (essentially, it is the perimeter.

SPI I CAN identify parts of a circle. I CAN find the circumference and area of a circle.

Circumferences & Areas of Circles. Circle information Defn: Points on a plane that are equidistant from a given point (CENTER). Radius: From center to.

Hannah D..  Radius is half the way across the circle  Diameter is the whole way across the circle.

Circumference Review. Review What is the relationship between a radius and a diameter? What does a circumference measure? What formulas do we use to calculate.

Circles and Circumference. Vocabulary A ________is a plane figure that consists of a set of points that are equidistant from a given point called the.

Circles. diameter Circumference radius Circumference- the distance around the circle. About 3X the diameter.

Circle Terminology. Circle The set of points in a plane that are a fixed distance from a given point called the center of the circle.

CIRCLES CIRCUMFERENCE & AREA. CIRCUMFERENCE C = ΠdorC = 2Πr 12cm.

Circles Review 3 rd Grade Geometry. What is the diameter of a circle?

How to Find the Area of a Circle by : Rachel Sorenson.

Parts of a circle The distance around circle O is called the circumference of the circle. It is similar to the perimeter of a polygon.

By Renikki Alexander IDT 7062 Let’s Listen to the Circle Song "πr 2 sounds like area to me and when I need circumference I'll use πd."

Perimeter, Circumference and Area. Perimeter and Circumference Perimeter : The distance around a geometric figure. Circumference: The distance around.

Finding Circumference for 4 th and 5 th Grade By Andrea Klee.

The midpoint of a circle is centre The line drawn from the centre to the circumference is … radius.

Circles… SOL 6.12 Mrs. Norman John Rolfe Middle School.

Objective: Solve equations using area circumference, diameter, and radius.

Do Now:. Circumference What is circumference? Circumference is the distance around a circle.

Circles. Parts of a Circle Center The diameter is the distance across the circle through the center The radius is the distance to the center point.

CIRCLES Lesson 9-6. Circles A circle is a set of points that are the same distance from a given point, called the center.

© 2010 Pearson Prentice Hall. All rights reserved Circles § 7.7.

CIRCLES AND CIRCUMFERENCE. CONTINUATION OF PI DAY In every circle, the ratio of the circumference to the diameter is equal to …… The Greek letter.

Lesson 8.7 Concept: How to find the circumference of a circle. Guidelines: *The diameter of a circle extends from one side of the circle to the other.

Crazy Circles Area and Circumference By: Jenna+Ashley Area and Circumference By: Jenna+Ashley.

Geometry: Circles and Circumference

Circles… SOL 6.12 Mrs. Norman John Rolfe Middle School.

Circles and Circumference

Circumference of Circles

Central Angles and Arc Length

Intro to Algebra/Geometry

Circumference of Circles

Geometry: Circles and Circumference

Presentation transcript:

By: Kay McInnis

Diameter DIAMETER is the distance across a circle passing through the center point.

Radius RADIUS is the distance from the center to any point on the circle.

Diameter Radius Can you identify the relationship between the DIAMETER and the RADIUS of a circle?

Diameter The RADIUS is half of the DIAMETER. Radius

CIRCUMFERENCE CIRCUMFERENCE is the distance around the circle.

CIRCUMFERENCE The relationship between the DIAMETER and the CIRCUMFERENCE of a circle is PI. DIAMETER

 The symbol for PI is . The value of PI is 3.14.

To find the CIRCUMFERENCE of a circle, multiply the DIAMETER and PI. C = d x 

d = 5 m Can you figure out the CIRCUMFERENCE of the circle? If d = 5 and  = 3.14, then CIRCUMFERENCE equals 5 x C = 15.7 m

d = 10 cm Find the CIRCUMFERENCE of the circle. 10 x 3.14 = C C = 31.4 cm