RotateText[GeoGebra, 45°]

VerticalText[Text[texte2]]

\scalebox{Zoom }{GEOGEBRA}

ZOOM = 6 (slider from 1 to 9, step 1)
texte2: "\scalebox{1." + (LaTeX[ZOOM]) + "}{GEOGEBRA}"
texte3 = VerticalText(Text[texte2])
texte1 = RotateText(Text[texte2], 45*°)