Convex-and-Concave-Polygons.POWERPOINT PRE

Convex-and-Concave-Polygons.POWERPOINT PRE

• 1.
  Concave & Convex Polygons
• 2.
  • Classify polygonswhether they are convex or nonconvex OBJECTIVES
• 3.
  According to SidesRegula r Irregula r Classification of a Polygon Recap
• 4.
  Concave & Convex
• 5.
  Which of thesetwo desk shapes do you think is better? Why? Which of these two polygons do you think is concave and which is convex? Desk 1 Desk 2 The following are two shape designs for a desk or table top.
• 6.
  Desk 1 Desk2 The following are two shape designs for a desk or table top. CONCAVE CONVEX
• 7.
  Real Life Uses Architecture Engineering Design Manufacturing
• 8.
  Convex Polygon ConcavePolygon • vertices point outward(pushes out) • at least one vertex points inward(caves in)
• 9.
  Convex Polygon ConcavePolygon • A polygon is convex if no line that contains a side of the polygon contains a point in the interior of the polygon.
• 10.
  Convex Polygon ConcavePolygon • diagonals is in the interior of the polygon • at least one diagonal is in the exterior of the polygon a line segment drawn between any two points “diagonal ”
• 11.
  Convex Polygon ConcavePolygon • all interior angles are less than 180 degrees • at least one interior angle greater than 180 degrees (reflex angle) measures more than 180° but less than 360° “reflex angle”
• 12.
  https://www.geogebra.org/m/hapwe7hb
• 13.
  Convex Polygon ConcavePolygon • all interior angles are less than 180 degrees • at least one diagonal is in the exterior of the polygon • vertices point outward(pushes out) • diagonals is in the interior of the polygon • no line that contains a side of the polygon contains a point in the interior of the polygon. • at least one vertex points inward(caves in) • at least one interior angle greater than 180 degrees (reflex angle)
• 14.
  Convex Polygon Concave Polygon MEASURING CONVEX ANDCONCAVE POLYGON Up Next
• 15.
  Thank You for Listening