Keywords: SlopeTrafficSign1-10.svg Triangular slope road sign with slope 1 10 for teaching about ratios Dialog-warning svg 2010-10-25 19 56 UTC Dialog-warning svg Tango Project derivative work JamesCrook <span class signature-talk >talk</span> JamesCrook Original upload log This image is a derivative work of the following images File Dialog-warning svg licensed with PD-author Tango 2005-12-01T06 02 43Z Sasa Stefanovic 48x48 9262 Bytes <nowiki> Source http //tango-project org/ cc-by-sa-2 5 Tango project </nowiki> Uploaded with derivativeFX Black red white signs Tango project Triangular warning road signs Triangular icons |