Keywords: Triangle-exteriour-angle-theorem-2.svg b0ffb0 Interior angles ffb0b0 Exterior angles b0ffb0 Innenwinkel ffb0b0 Außenwinkel own MartinThoma 2014-10-01 File Triangle-exteriour-angle-theorem-1 svg ValidSVG Source is available at https //github com/MartinThoma/LaTeX-examples/ github Triangle theorems TikZ diagrams Images by Martin Thoma/Mathematics/Triangles Exterior angles of a triangle Quality images by Martin Thoma Quality images - valid vector Cc-zero ImageNote 1 98 10 17 20 240 227 2 more to the left ImageNoteEnd 1 ImageNote 2 197 127 17 22 240 227 2 more to the left ImageNoteEnd 2 ImageNote 3 182 153 19 16 240 227 2 up too close to circle ImageNoteEnd 3 ImageNote 4 44 184 22 24 240 227 2 up too close to the circle ImageNoteEnd 4 QualityImage |