PPT-6.1 Notes: Angles of Polygons

    Todays Objectives Students will be able to find and use the sum of the measures of the interior angles of a polygon Students will be able to find and use the sum of the measures of the exterior angles of a polygon . BUILDING POLYGONS. We use line segments to build polygons. . A polygon is a closed shape with straight sides.. POLYGON. NOT A POLYGON. POLYGONS. POLYGONS. Polygons may also be called 2D shapes or PLANE FIGURES. . Compare and . classify other polygons.. Multiply by . 5. 5. . x . 5 . = _____. Let’s skip-count up by . FIVES. . to find the answer.. Hold up . a finger for each . five.. 5. 10. 15. 20. 25. 25. 3. Hubarth. Geometry. 10.7 Measure . of an Inscribed Angle. .. C. A. B. D. Ex 1 Use Inscribed Angles. a.. m. . T.  . mQR. b.. Find the indicated measure in. . P. .. M T = . mRS. =. . I can identify regular and not regular polygons and find the angle measurements of regular polygons. Review. The lengths of three sides of a triangle are given. Classify the triangle.. 1.. 12, 12, 12. I can identify different types of polygons.. I can tell the properties of each type of polygon.. I can categorize quadrilaterals based on their properties.. Polygon Review. SRB 142. Notes and Definitions. Thursday, October 17. Math Message. Label unit 3.9 and the date at the top of your Math Response. Complete the following in your Math Notebook:. Using a straightedge, draw a big triangle in your notebook. Warm Up. 1.. . If . ∆. QRS.  . ∆. ZYX. , identify the pairs of congruent angles and the pairs of congruent sides.. Solve each proportion.. 2.. . 3.. . . x . = 9. x . = 18. . Q. Polygons. Polygon . Definition. : A polygon is a closed figure in a plane, formed by connecting line segments endpoint to endpoint. Each segment intersects exactly two others. . Side. vertex. Polygons!. Shape and Angles. Assumed knowledge. recall and use properties of angles. angles at a point. angles at a point on a straight line. perpendicular lines. vertically opposite angles. distinguish between scalene, isosceles, equilateral and right-angled triangles. What is a polygon?. Closed figure. At least 3 sides. Line segments are sides. Sides meet is call a vertex. More Polygon Terms. Diagonal – connects two non consecutive vertices. Concave – at least one diagonal outside polygon, dented in. 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.. This unit introduces Polygons. . It defines polygons and regular polygons, and has the Polygon Angle Sum theorem. . This unit also details quadrilaterals, special quadrilaterals, congruent polygons, similar polygons, and the Golden Ratio.. The following presentation is a geometry lesson for fifth to sixth grade students. The slides show photographs of different houses and an explanation or definition of geometry terms. . The students are also shown an example of each term that has been . Classifying Polygons. Students . will be able . to:. Identify the 2-dimensional shapes based on their properties.. Key Vocabulary. Polygons. Triangles. Quadrilaterals. Pentagons and Hexagons. Other Polygons.