PPT-12.1 Central Angles and Arc Measures

Arc Measure Arc Measure the angle measure Task 121 Visual Aid httpwwwmathopenrefcomarcanglehtml Central Angles amp Arc Measures MinorMajor Arcs Minor Arcs arcs that are less than 180. Parts of an angle. How to name Angles. After the Vertex - A. After the rays that form the angle BAD . After the letter or number inside the angle. . 1. Compass . Tool used to draw circles and parts of circles called arcs.. Section 10.4. Inscribed Angles . Boardwork. Find the measure of the indicated arc or angle in Circle O.  . Find the measure of the indicated arc or angle in Circle O.  . Find the measure of the indicated arc or angle in Circle O. Central Angles. Central Angle. (of a circle). Central Angle. (of a circle). NOT A. Central Angle. (of a circle). A . central angle. is an angle whose vertex is the CENTER of the circle. CENTRAL ANGLES AND ARCS. 1. Lesson 1-4. Angles. Lesson 1-4: Angles. 2. Angle and Points. An Angle is a figure formed by two rays with a common endpoint, called the . vertex. .. vertex. ray. ray. Angles can have points in the interior, in the exterior or on the angle.. 1. ARC – How do make money?. Club Members. Comp Members. Visiting Crews. Juniors Program. Private Lessons. Member Rentals. Regattas. Retail Sales . ITR / Classes. Currently there are nine distinct . Geometry Unit 9. Inscribed Angles in Circles. Content Objective. : Students will be able to . identify inscribed . angles and their intercepted arcs in circles. . Language Objective. : Students will be able to . Wheel . of Formulas. Central Angle. Vertex ON circle. Vertex INSIDE circle. Vertex OUTSIDE circle. Arc Angle . Formulas. P. A. B. C. Case I:. . Vertex is . AT. the center. Case II:. . Vertex is . ON. Protractor: . What do you notice? . Task One: . Look at the protractor. Write down everything that you notice about the protractor. Try and come up with at least . 10 facts. Think about . number patterns . Concept 1. Find the Interior Angles Sum of a Polygon. A. . Find the sum of . the measures . of the interior angles of a convex nonagon.. A nonagon has nine sides. Use the Polygon Interior Angles Sum Theorem to find the sum of its interior angle measures.. Chapter 10. This Slideshow was developed to accompany the textbook. Larson Geometry. By Larson. , R., Boswell, L., . Kanold. , T. D., & Stiff, L. . 2011 . Holt . McDougal. Some examples and diagrams are taken from the textbook.. 1. 2.. Now put it all together to solve for the missing angle.. Unit 6 – Day 3. Inscribed and Circumscribed. Today’s Objectives. Students will use properties of Central angles and Tangent lines to solve for missing parts. Measure angles with a protractor. Identify and use the angle addition postulate. Warm-Up: . Find the indicated value. AC = 20; AB = _____. A. B. C. x-4. 2x 3. Vocabulary:. Degree:. The most common unit of angle measure.. Sometimes it is referred to as a “middle” number of the data.. Measures of Central Tendency:. A single number to serve as a representative value around which all the numbers in the set tend to cluster.. Warm Up. 1.. . Draw opposite rays . . . and . .. . Solve . each equation.. 3.. 2. x. 3 . x. – 4 3. x. – 5 = . 180 . .  . 2.. Draw . . . and . , . where . A. , . . B. , and .