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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.
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POLYGONS & POLYHEDRA
By Jenna Lin
WHAT IS A POLYGON?
•POLY MEANS MANY•GON MEANS ANGLE
THESE ARE POLYGONS
THESE ARE NOT POLYGONS
POLYGONS
• 2-D Closed Shape• Made of Line Segments• No curves• Line Segments Only
Intersect at the Endpoints
REGULAR POLYGONS
• All line segments are congruent
• All angles are congruent. Regular Polygons
Not Regular Polygons
Names of Polygons # sides # of angles Name of polygon
3 3 triangle or trigon4 4 quadrilateral or
tetragon 5 5 pentagon6 6 hexagon7 7 heptagon8 8 octagon9 9 nonagon or enneagon10 10 decagon11 11 hendecagon12 12 dodecagon
WHAT IS A POLYHEDRON?
POLYHEDRON
A 3-D SHAPE MADE OF POLYGONS
edgeface
vertex
PLATONIC SOLIDSor
regular polyhedra
Polyhedra where all of the faces are
congruent; they are each made of
congruent, regular polygons.
5 PLATONIC SOLIDS
regular tetrahedron
regular octahedron
regular dodecahedron
regular icosahedron
regular hexahedron (cube)
ARCHIMEDIAN SOLIDS
or semi-regular polyhedra
Polyhedra which are
made of more than one type of congruent,
regular polygons.
A FEW OF THE
13 ARCHIMEDIAN SOLIDS
Truncated Icosahedron aka
Buckyball or Soccer Ball
Truncated Cube
Truncated Octahedron
Cuboctahedron