Convex polygon

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This is for you my grade 7 class since im sick today...

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Convex polygon

  1. 1. Mathematics Teachers Association of the Philippines Self Learning Kit : Grade 7 – Geometry Convex PolygonObjectives Credits Review Discussion Activities Web Links Click the icons to navigate. Prepared by: Mr. Alvin Patrick Q. Peñaflorida VALENZUELA NATIONAL HIGH SCHOOL Division of City Schools - VALENZUELA
  2. 2. ObjectivesDefine and illustrate convex polygons Back Home Next
  3. 3. CreditsReference Books:1. E-Math III by Oronce and Mendoza, First Edition, 20072. The University of Chicago School Mathematics Project(GEOMETRY) by Usiskin et. al., second Edition, 1997Web:1. http://www.mathsisfun.com2. http://www.mathopenref.com3. http://www.animatedgif.net4. http://www.gifs-paradise.com5. http://classroomclipart.com Back Home Next
  4. 4. ReviewInternal and External Region of a Polygon Click here to begin Back Home Next
  5. 5. Internal and External Region of a Polygon Point G lies on the A Point F lies on the Pentagon ABCDE Internal Region of the Pentagon ABCDE G B F E HThe polygon and itsinterior region forms thePOLYGONAL REGION. Point H lies on the Exterior of theTherefore, points F polygon.and G lies on thepolygonal region. C D ABCDE PENTAGON (5 – sided polygon) Back Home Next
  6. 6. DiscussionConvex Polygon Some polygon “bend inwards” while others The polygons that bend inwards do not. are called “CONCAVE POLYGON” and those do not are called “CONVEX POLYGON”. Back Home Next
  7. 7. Examples of Convex Polygon P E J A P B F I Q C K D G H Q Q P M LA polygon is considered convex if PQ joining any twopoints P and Q lies on the polygonal region. Back Home Next
  8. 8. Examples of Concave Polygon F K A Q B J P I D Q P E C G HA polygon is considered concave if PQ joining any twopoints P and Q lies outside the polygonal region. A concave polygon is also known as nonconvex polygon. Back Home Next
  9. 9. Which of the followingpolygon is a convex? Activities Click the figure of your choice. You’ve got it correctly!Sorry… Sorry… Back Home Next
  10. 10. Which of the following polygon is a nonconvex? Click the figure of your choice.Amazing……! Sorry… Sorry… Back Home Next
  11. 11. Which of the following figure is NOT convex nor concave polygon? Click the figure of your choice.Sorry… Sorry… Excellent work! Back Home Next
  12. 12. What figure should be placed on the given figure below to make it a convex polygon?Click the figure of your choice. Given Isosceles Trapezoid Sorry… Excellent work! Sorry… Back Home Next
  13. 13. Which is/are impossible to construct? Click the answer of your choice. Concave equilateral pentagon Convex irregular 20-gon Concave trapezoid Sorry…Congratulations!!! Back Home Next
  14. 14. Web Links Click the interactive link on the web for more interesting activities.http://www.mathopenref.com/polygonconvex.html Back Home Next
  15. 15. Not everything that can be counted counts, and noteverything that counts can be counted. http://www.coolnsmart.com/math_quotes/ Prepared: Mr. Alvin Patrick Q. Peñaflorida Division of City Schools - ValenzuelaHome VALENZUELA NATIONAL HIGH SCHOOL

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