jcássio41 Works
Barycenter of a Triangle: Median Intersection and Proof
Solving Quadratic Equations with Error Correction
Position of a Point Relative to a Straight Line
Geometric Construction of Regular Polygons (Triangle, Square, Hexagon)
Compass Constructions: Parallel/Perpendicular Lines and Angle/Line Bisectors
Intuitive Demonstration of Circle Area
The Orthocenter
Segments and Midpoint Dynamic Geometry Construction
Rays, angles and angle bisector
Triangle Congruence Cases
Primitive Notions and Propositions: Lines, Planes, and Geometric Construction
Perpendicular Line Construction
Incenter of a Triangle by Jorge Cássio
Parallel Lines and Angles by Jorge Cássio
Property of the Median to the Hypotenuse in a Right Triangle
Why ASS (or SSA) Cannot Determine Triangle Congruence
Euler Line and Centroid of a Triangle
Trapezoid Midsegment