Lectures related to Orthogonality and Perpendicularity in Descriptive Geometry

Explains the intersection of a line and a plane using auxiliary planes and projectants.

Covers orthogonal vectors, unit vectors, and the Pythagorean theorem in R^m.

Explores relative positions of lines in space, discussing parallel, secant, and confused lines.

Explores straight lines, line purity, and line projections in geometric descriptive.

Covers the geometry of the triangle, including inequalities, heights, and centers.

Presents examples of relative positions in space and solving problems with parametric equations.

Covers defining a plane by its traces and determining its properties.

Explores elementary operations in geometry, including addition, subtraction, multiplication, and division of segments and angles.

Explores triangle properties like inequalities, medians, and orthocenters using analytical geometry.