Parts of a Circle Radius: The distance from the center of the circle to its outer rim. Chord: A line segment whose endpoints are on a circle. Diameter: A chord that passes through the center of the circle. The length of a diameter is two times the length of a radius. Tangent: A li...
114 Circumference and Arc Length114个圆周与弧长.ppt,Circumference and Arc Length Geometry Mrs. Padilla Spring 2012 Objectives/Assignment Find the circumference of a circle and the length of a circular arc. Use circumference and arc length to solve real-l
Circumference and Arc Length Section 6.7 Essential Questions How do I find the circumference of a circle and the length of a circular arc? How do I use circumference and arc length to solve problems? Activator Find the measure of each arc. 1. 2. 3. 4. 41; 110; 250; 319...
2 10 C = d C = •10 C = 2r C = 2••2 C = 4 12.6 C = 10 31.4 EX The circumference of a circle is 10, What is its diameter in terms of ? diameter = EX The radius of a circle is 8, What is the circumference in terms of ...
Ex:Findtheradiusofacirclewithacircumferenceof52in.C=2r52=2r52/2=r8.28in.r OR C=d52=d52/=d16.55in.d So,r16.55/2r8.28in.ArcLength •Defn.–aportionofthecircumferenceofacircle.•Themeasureofanarcisindegrees.•Thelengthofanarcisinlinearunits.(such...
11.4CircumferenceandArcLength Geometry Mrs.Spitz Spring2006 Objectives/Assignment •Findthecircumferenceofacircleand thelengthofacirculararc. •Usecircumferenceandarclengthto solvereal-lifeproblems. •Assignment:pp.686-688#1-38 Findingcircumferenceandarc length •Thecircumferenceofacircleisthe distancearound...
下载得到文件列表 Circumference and Shape of the Earth:地球的周长和形状.ppt相关文档 文档介绍文档介绍:Circumference and Shape of the EarthMeasure angle to star from two locations. Calculate arc deg and watch a ship disappear over the horizon - Earth must be roundKnown by at least400 BC...
Identify Parts of a Circle Name the circle Circle A Name a radius Name 2 chords Name a diameter Important Theorems/Formulas All radii in a circle are congruent. A diameter (d) is composed of 2 radii (r). So all diameters in a circle are congruent. d = 2r ...