Useful Links
Mathematics
Geometry
Solid Geometry
Three-dimensional Shapes
Polyhedra
Definition and Characteristics
Definition of polyhedra
Convex vs. non-convex polyhedra
Regular polyhedra (Platonic solids)
Semi-regular polyhedra (Archimedean solids)
Other classifications (Kepler–Poinsot polyhedra, Johnson solids)
Prisms
Definition and identification of prisms
Types of prisms (rectangular, triangular)
Lateral faces and bases
Volume calculation (base area × height)
Surface area calculation (sum of lateral area and base area)
Pyramids
Definition and properties of pyramids
Right vs. oblique pyramids
Types (triangular, square)
Volume calculation (1/3 × base area × height)
Surface area computation (base area + 1/2 × perimeter × slant height)
Euler's Formula
Explanation of Euler's formula (V - E + F = 2)
Application to different polyhedral shapes
Derivation and proof
Non-polyhedra
Spheres
Characteristics of a sphere
Great circles and spheres
Volume formula derivation (4/3 × π × r³)
Surface area formula derivation (4 × π × r²)
Cylinders
Definition and parts (base, height, lateral surface)
Types (right, oblique)
Volume calculation (π × r² × h)
Surface area computation (2 × π × r × h + 2 × π × r²)
Cones
Elements of a cone (base, height, slant height)
Types (right circular, oblique)
Volume calculation (1/3 × π × r² × h)
Surface area calculation (π × r × l + π × r²)
Solids of Revolution
Definition and creation process
Generation through rotation
Examples (sphere, cylinder, cone)
Method of Disks
Explanation of the disk method for volume
Application to obtaining volumes of rotational solids
Method of Shells
Explanation of the shell method
Use in calculating volumes of revolution
Volume and Surface Area Calculations
Integration techniques for volume calculation
Surface area integrals for solids of revolution
Properties and Theorems
Relationship between edges, vertices, and faces in polyhedra
Symmetries in three-dimensional shapes
Dual polyhedra concepts
Intersection of solids
Measurement in Solid Geometry
Units and conversions for volume and area
Measuring angles in three-dimensional structures
Importance of dimensional analysis
Applications of Solid Geometry
Real-world use in architecture and engineering
Modeling and visualization in computer graphics
Applications in physics, e.g., determining moments of inertia
Role in product design and industrial applications
2. Plane Geometry
First Page
4. Geometric Transformations