Overview of the particular lines of the triangle – GeoGebra

Symmetries of an equilateral triangle – GeoGebra

Finding the Area of Shapes on Graphs – GeoGebra

G.2.4.2 What Information Do I Need? – GeoGebra

Congruent Triangles – GeoGebra

Euler Line of a Triangle – GeoGebra

In addition, to parallel lines and other relationships between

My Unique Triangle – GeoGebra

The Unit Equilateral Triangle and Arbitrary Triangle – GeoGebra

Geometry behind a painting: an exploration – GeoGebra

Right Triangle – GeoGebra

Perpendicular line sum of an Equilateral Triangle – GeoGebra

Area of a Triangle – GeoGebra

The Triangle – GeoGebra