Solid Geometry - Solid Figures

Cube
Rectangular prism - cuboid
Right triangular prism
Regular right triangular prism
Regular right hexagonal prism

Regular square pyramid
Regular triangular pyramid
Regular hexagonal pyramid
Right pyramidal frustum

Tetrahedron
Octahedron
Dodecahedron
Icosahedron

Cone
Conical frustum
Cylinder
Sphere
Spherical cap
Spherical segment
Spherical sector

Solid figures solved problems, examples
Solid figures solved problems, examples
Solid figures solved problems, examples - A
Solid figures solved problems, examples - B
Solid figures solved problems, examples - C
Solid figures solved problems, examples - D
Solid figures solved problems, examples - E
Solid figures solved problems, examples - F
Solid figures solved problems, examples - G

 Application of Trigonometry
Right-angled Triangle or Right Triangle
Trigonometric functions of an acute angle defined in a right triangle
Solving right triangles
Solving right triangles examples

Oblique or Scalene Triangle

cosine law (rule) or the law of cosines
Calculating angles of an oblique triangle
Solving oblique triangles - use of the sine law and the cosine law
examples
Mollweide's formulas, the tangent law (or the tangent rule) and half-angle formulas
The tangent law or the tangent rule
Half-angle formulas
Area of a triangle, the radius of the circumscribed circle and the radius of the inscribed circle
The radius of the circumscribed circle or circumcircle
Area of a triangle in terms of the inscribed circle or incircle
The radius of the inscribed circle
Oblique or scalene triangle examples
Application of Trigonometry in Plane Geometry, Solid Geometry, Plane Surveying and  Physics
Applications of trigonometry in Plane Geometry
The parallelogram - Area of a parallelogram
Trapezoid or trapezium
The area of a trapezoid given its four sides
The area of the trapezoid given two parallel sides (bases) and angles at the ends of the longer base
Diagonals of a trapezoid, determining the diagonals of the trapezoid given its four sides

Applications of trigonometry in Solid Geometry
Right pyramid
Right pyramids, examples
Sections of solids
Sections of solids, examples
Oblique prism
Oblique Pyramid
Applications of Trigonometry in Geodesy (or Plane Surveying) and Physics
Applications in geodesy or plane surveying
Applications in physics
An example of using trigonometry in optics
Volume and Surface Area of Solids of Revolution, Guldin’s Rules