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C IRCLES Identifying parts of the circle
V OCABULARY Radius Chord Diameter Arc Center
C ENTER AND A RC A circle can be named by its center. A circle with a center labeled C would be named circle C. An unbroken part of a circle is called an arc. B C A
R ADIUS A radius connects the center with a point on the circle. radius CD D C
CHORD A chord connects two points on a circle. chord AB A B
DIAMETER A diameter is a chord that passes through the center of a circle. diameter AB A B
L ESSON Q UIZ Use the given diagram for the following: 1. Name two radii. 2. Name two chords. 3. Name the center of the circle. 4. Name a diameter. 5. Name an arc of the circle. H A G J E D F C B K
9.3 Circles Objective: Students identify parts of a circle and find central angle measures.
A B Q Chord AB is 18. The radius of Circle Q is 15. How far is chord AB from the center of the circle? 9 15 (family!) 12 x.
PARTS OF A CIRCLE To understand and apply the vocabulary.
Properties of Chords. When a chord intersects the circumference of a circle certain properties will be true.
Brought to you by powerpointpros.com. A circle has different parts. Today, we are going to look at the following: o Center o Radius o Diameter o Circumference.
Circles and Chords. Vocabulary A chord is a segment that joins two points of the circle. A diameter is a chord that contains the center of the circle.
Circle : A closed curve formed in such a way that any point on this curve is equidistant from a fixed point which is in the interior of the curve. A D.
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.
circle - set of all points in a plane at a given distance from a given point in the plane.
Unit 6 Day 1 Circle Vocabulary. In your pairs look up the definitions for your vocabulary words.
Circles: Arcs, Angles, and Chords. Define the following terms Chord Circle Circumference Circumference Formula Central Angle Diameter Inscribed Angle.
The outside of the circle is called circumference The circumference is the distance around the circle.
12.2 Arcs and Chords. Apply properties of Arcs Apply properties of Chords.
GEOMETRYGEOMETRY Circle Terminology. Radius (or Radii for plural) The segment joining the center of a circle to a point on the circle. Example: OA.
10.1 Circles. Definition: Although all circles have the same shape, their sizes are determined by the measures of their radii. Two or more coplanar circles.
Geometry Chapter 9 Section 1 Circles. Circle The set of all points in a plane that are a given distance from a center point Radius a line segment from.
LESSON 11.2 CHORDS AND ARCS OBJECTIVE: To use chords, arcs and central angles to solve problems To recognize properties of lines through the center of.
Properties of Circles. A circle is the set of all points in a plane that are the same distance from a given point, called the center of a circle. A circle.
A circle is defined by it’s center and all points equally distant from that center. You name a circle according to it’s center point. The radius.
Circle Geometry. Write down as many things as you know about this shape.
Given three points of a circle: (-1,1), (7,-3), (-2,-6). Find the center of the circle.
Warm Up Week 1. Section 10.1 Day 1 I will identify segments and lines related to circles. Circle ⊙ p Circle P P.
B ELLWORK ACT Review: (x, y) is the midpoint of a segment with endpoints (2, -3) and (8, 9). What is the sum of x and y ? Geometry Review: Find the length.
Circles. Circle Is the set of all points in a plane that are equal distance from the center. This circle is called Circle P. P.
Chapter 10: Circles Circles and Circumference Name a circle by the letter at the center of the circle Diameter- segment that extends from one point.
A circle is a closed curve in a plane. All of its points are an equal distance from its center.
Equation of a Circle. Equation Where the center of the circle is (h, k) and r is the radius.
Where the center of the circle is (h, k) and r is the radius. Equation.
GeometryGeometry Lesson 6.1 Chord Properties. Geometry Geometry Angles in a Circle In a plane, an angle whose vertex is the center of a circle is a central.
A chord that goes through the center of a circle diameter.
1.Circle Notes A circle is the set of all points in a plane at a given distance from a given point Circles (Part 1)
SUBMITTED BY ROSHNI B S. Circle is a closed curve in a plane A circle can be drawn with the help of a circular object.
All About Circles Circles are everywhere! OP is the radius of the circle.
Circumference Arc Radius Diameter Chord Tangent Segment Sector Semicircle.
Parts of a Circle Aim: To understand and know the vocabulary for parts of a circle.
10.3 Chords. Review Draw the following on your desk. 1)Chord AB 2)Diameter CD 3)Radius EF 4)Tangent GH 5)Secant XY.
Circle Basics Central Angles. Definition - Circle A circle is the collection of all points in a plane equidistant from a given point called the center.
1. Assume that lines that appear tangent are tangent. Find the value of x.
Circles Review UNIT 9. Standards Standard 78: Identify and describe relationships among circles (radius, diameter, chord, tangent, secant, etc.) Standard.
[10.2] Perpendicular Bisector Draw a Chord AB Find the Midpoint of AB (Label it M) From M, draw a line through O What do you notice? Circle #1.
Lesson 8-4: Arcs and Chords 1 Lesson 8-4 Arcs and Chords.
Math 9 Unit 4 – Circle Geometry. Activity 3 – Chords Chord – a line segment that joints 2 points on a circle. A diameter of a circle is a chord through.
Parts of a Circle & Circumference Textbook page 516 IAN page 120.
Tangents to Circles Pg 595. Circle the set of all points equidistant from a given point ▫Center Congruent Circles ▫have the same radius “Circle P” or.
1 Lesson 10.2 Arcs and Chords. 2 Theorem #1: In a circle, if two chords are congruent then their corresponding minor arcs are congruent. E A B C D Example:
U NIT 3 Circles & Lines. S ECTION 1 Key Terms W RITE DOWN EVERYTHING YOU KNOW ABOUT CIRCLES !
9-1 Exploring Circles Objectives: To identify and use parts of circles. To solve problems involving the circumference of a circle.
Review:labeled part Write the name of each of the circle E. B. C. A. D.
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