Geometry
Line, a half-line and line segment
The line segment bisector
Angle, measurement of angles

Construction of angles; 60°, 30°, 90° and 45° (degrees)

Points, Lines and Planes in Three-Dimensional (3D) Space
Position of two lines in a three-dimensional space

Line and plane in a three-dimensional space
Two planes in a three-dimensional space
The line of intersection of two planes

Orthogonal projection of a point onto a plane
The distance from a point to a plane
Angle between a line and a plane, and angle between two planes

 Plane Geometry – Plane Figures
Triangles

Main properties of triangles

Right-angled Triangle - The Pythagorean Theorem
The Pythagorean theorem

Solving the right triangle

Equilateral triangle
Isosceles triangle
Oblique or Scalene Triangle

The median, the centroid of a triangle

Congruence
(or the sine rule) and the cosine law
The sine law
The sine law examples
The cosine law
The cosine law examples
Calculating angles of an oblique triangle
Solving the oblique triangle - use of the sine law and the cosine law
Triangle problems and solutions
Triangle solved problems, examples
Triangle solved problems - A
Triangle solved problems - B
Triangle solved problems - C
Triangle solved problems - D
Triangle solved problems - E
Triangle solved problems - F
Square

Rectangle

Kite or deltoid

Regular polygons

Circle and circular sector

Annulus and annulus segment
Plane figures solved problems, examples
Plane figures solved problems, examples
Plane figures solved problems, examples - A
Plane figures solved problems, examples - B
Plane figures solved problems, examples - C
Plane figures solved problems, examples - D