of 13

# Polygons n polyhedra for slide share 2014

This power point may be used by educators to teach students about polygons and polyhedra. It includes the definition of regular polygons, the names of a few common polygons and an introduction to Platonic Archimedes solids.
Published on: Mar 4, 2016
Published in: Education

#### Transcripts - Polygons n polyhedra for slide share 2014

• 1. POLYGONS & POLYHEDRA By Jenna Lin
• 2. WHAT IS A POLYGON? • POLY MEANS MANY •GON MEANS ANGLE
• 3. THESE ARE POLYGONS
• 4. THESE ARE NOT POLYGONS
• 5. POLYGONS • 2-D Closed Shape • Made of Line Segments • No curves • Line Segments Only Intersect at the Endpoints
• 6. REGULAR POLYGONS • All line segments are congruent • All angles are congruent. Regular Polygons Not Regular Polygons
• 7. Names of Polygons # sides # of angles Name of polygon 3 3 triangle or trigon 4 4 quadrilateral or tetragon 5 5 pentagon 6 6 hexagon 7 7 heptagon 8 8 octagon 9 9 nonagon or enneagon 10 10 decagon 11 11 hendecagon 12 12 dodecagon
• 8. WHAT IS A POLYHEDRON?
• 9. POLYHEDRON A 3-D SHAPE MADE OF POLYGONS edge face vertex
• 10. PLATONIC SOLIDS or regular polyhedra Polyhedra where all of the faces are congruent; they are each made of congruent, regular polygons.
• 11. 5 PLATONIC SOLIDS regular tetrahedron regular octahedron regular dodecahedron regular hexahedron (cube) regular icosahedron
• 12. ARCHIMEDIAN SOLIDS or semi-regular polyhedra Polyhedra which are made of more than one type of congruent, regular polygons.
• 13. A FEW OF THE 13 ARCHIMEDIAN SOLIDS Truncated Icosahedron aka Buckyball or Soccer Ball Truncated Cube Truncated Octahedron Cuboctahedron