1. PEPEJAL PLATONIK & ARCHIMEDES
TUTORIAL M13
PEPEJAL PLATONIK & ARCHIMEDES

2. TUGASAN Banding bezakan antara pepejal Platonik dan Archimedes
Compare and contrast Platonic solids and Archimedean polyhedra

3. SOALAN PEPERIKSAAN Nov 2009, 3(a) Nov 2009, 3(b)
Platonic solids and Archimedean solids are two types of polyhedra
What are the similarities and differences between Platonic solids and Archimedean solids?
(7 marks)
Nov 2009, 3(b)
Explain the similarities and differences between the small stellated dodecahedron and theh great stellated dodecahedron
(13 marks)

4. Platonic & Archimedean
Convex polyhedron
Identical vertices
Faces are regular polygons
5 Platonic solids, 13 Archimedean solids
Faces are identical, faces are not identical (more than two types)

5. SSD & GSD Concave polyhedron 12 identical faces Both have 30 edges
SSD has 12 vertices, GSD has 20 vertices
Five pentagrams meet at a vertex (SS).
Three pentagrams meet at a vertex
SSD constructed from dodecahedron, GSD from a icosahedron
Schlafli symbol
SSD {5/2, 5}
GSD {5/3, 3}