Geometry Application Obtuse angle on the left (see upside down “T” figure) and perpendicular lines (right angle) on the right. Share this:TwitterFacebookLinkedInMoreEmailPrintLike this:Like Loading... January 30, 2019January 30, 2019 by ctspedmathdude Categories: instructional strategiesTags: angle, angles, geometry, ice, perpendicular, walking on ice Leave a comment