Más contenido relacionado La actualidad más candente (20) Similar a Polygons n polyhedra for slide share 2014 (20) Polygons n polyhedra for slide share 20142. WHAT IS A POLYGON?
• POLY MEANS
MANY
•GON MEANS
ANGLE
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
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