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 . Polygon. – a two-dimensional closed figure made of three or more line segments. 4.4 . Similar Polygons. Learning Outcome: To be able to identify, draw, and explain similar polygons and solve problems using the properties of similar polygons . 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. 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. Polygons. SECTION . 5.03. After completing this lesson, you will be able to say: . I . can. use composition and decomposition to determine the area of polygons. .. I . can. solve problems involving area of polygons using composition and decomposition.. Geometric Reasoning. Dr J Frost (jfrost@tiffin.kingston.sch.uk) . Last modified: 12. th. April 2014. Objectives: . Be able to reason about sides and angles, and find interior/exterior angles of polygons.. Created By: 2BrokeTeachers. A Parade of Four-Sided Polygons. Quadrilaterals. There are many different types of quadrilaterals. We identify quadrilaterals using their sides and angles. . Side. Angle. Let’s Review…. 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. Angles and Geometry. Dr J Frost (jfrost@tiffin.kingston.sch.uk) . Last modified: 5. th. January 2014. Copy the diagram, then determine x.. Starter. 11. °. x. °. 22. °. 11. °. 22. °. 136. °. 33. 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. 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 . . I chose this for the ACEI standard 2: . Mathematics standard because geometry is a subject that many students find boring, but it is an important subject matter in math. This assignment shows the students that geometry occurs in everyday life. The students are able to find shapes for themselves in these buildings which makes them think critically for themselves. 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.. 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.