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Chapter 5 – Introduction of Geometry
(3-D Solids)
3-D Solids - Have lengths, widths and heights.
- are bounded by planes or curved surface.
(Formed by faces of polygon only)
(Consist of one or more curved surface)
Regular polyhedron
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Formed by regular polygon of the same size and shape
(Notes: regular polygons are polygons with all sides and angles are equal.)
Prism - Two ends are identical & parallel polygons
- Name according to the shape of bases
Triangular prism
Rectangular prism Pentagonal prism
Hexagonal prism
Octagonal prism
Decagonal prism
Pyramids - Base is polygon, other faces are triangles and meet at a common point called
vertex
Triangular pyramid
Rectangular pyramid
Pentagonal pyramid
Hexagonal pyramid
Octagonal pyramid
Regular Polyhedra
Regular tetrahedron
Regular hexahedron
Regular Octahedron Regular dodecahedron Regular icosahedron