Non-congruent Alternate interior angles

This is a compass that shows an example of non-congruent alternate interior angles. Angle one is an alternate interior of angle 2 but they aren't congruent. Compasses are used in multiple industries(advertising, aerospace, metal fabrication), in order to form certain angles on blueprints and logos. I found this on the internet at:
http://www.google.com/imgres?q=geometric+compass&start=222&um=1&hl=en&client=safari&rls=en&biw=1280&bih=738&tbm=isch&tbnid=LYmNI5mjYRJZGM:&imgrefurl=http://www.technicalpens.com/index.php%3Fmain_page%3Dproduct_info%26products_id%3D393&docid=adEvon10H7olvM&imgurl=http://www.technicalpens.com/images/centro_geometry.jpg&w=1000&h=406&ei=I6uAULH1FcTG0AHV9IDICQ&zoom=1&iact=hc&vpx=449&vpy=446&dur=279&hovh=143&hovw=353&tx=180&ty=99&sig=109637316179286308971&page=8&tbnh=105&tbnw=258&ndsp=31&ved=1t:429,r:43,s:200,i:133

Skew lines

This picture shows two skew lines. They exist on the planes of two steel girders. These are used for supporting buildings and are usually welded together. I found it on the internet at:
http://www.google.com/imgres?q=steel+girder&um=1&hl=en&client=safari&sa=N&rls=en&biw=1280&bih=738&tbm=isch&tbnid=M3IYIgHRL68ELM:&imgrefurl=http://www.heimer.com/Photographs/structure.html&docid=At-7jZ27sPCVGM&imgurl=http://www.heimer.com/images/photographs/structure/main_steel_girder_1.jpg&w=480&h=322&ei=1qWAULzADqbu0gGNnYGgAQ&zoom=1&iact=hc&vpx=856&vpy=108&dur=609&hovh=184&hovw=274&tx=179&ty=116&sig=109637316179286308971&page=1&tbnh=139&tbnw=222&start=0&ndsp=21&ved=1t:429,r:3,s:0,i:146

Supplementary angles that aren't a linear pair

These geometric blocks (purple and yellow rhombuses) clearly show two angles that, when added, supplement each other. I found this picture on the internet.
I found this picture at:
http://www.google.com/imgres?q=rhombuses+in+real+life&start=22&num=10&um=1&hl=en&client=safari&rls=en&biw=1280&bih=738&tbm=isch&tbnid=U9omUgxSU_orIM:&imgrefurl=http://forquiltssake.blogspot.com/2011_07_01_archive.html&docid=NjNlpAujZI89uM&imgurl=https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhFZJV4dKnV13gYJBJI0qVWq2KYDGRRi8g80PHbTUBwEccIsVVGCvDKhmH_-2h5fw_dBZ06kV95C61xA1Qr9oNNxRvK3u0OThiZ1le-Y1_VZ4naFQmdRu8OdbTEMsuVMAGnSQQJzG-PWLDE/s1600/BlocksInBox.jpg&w=998&h=550&ei=ZKKAUJe3PMWa0QH6noGwBA&zoom=1&iact=hc&vpx=431&vpy=288&dur=584&hovh=167&hovw=303&tx=142&ty=82&sig=109637316179286308971&page=2&tbnh=134&tbnw=270&ndsp=28&ved=1t:429,r:22,s:20,i:70

Adjacent Non-supplementary angles

These are drumsticks I found in my room. They show a pair of adjacent, non-supplementary angles. They are used in the music industry by a drummer.

Vertical angles

This is a land oil rig. It clearly shows in its supports that it uses vertical angles to hold the rig up. It is used by companies to drill into oil deposits in the ground.
I found it here: http://www.123rf.com/photo_5748532_oil-rig-pump-closeup-low-angle-view.html

Angle bisector

This is a trolling boat in the Gulf of Mexico. It is an example of an angle bisector because the arms that hold the lines fold down and are bisected my the main mast. It is used in the fishing industry to both drag singular lines and to drag nets.
I found it here:http://en.wikipedia.org/wiki/File:Fishing_boat_Che_Guevara_2.jpg

Segment bisector

This is an example of a segment bisector. It't just the pattern of supports on my ceiling tile. It shows clearly a bisection of a segment with a line. Its used to hold up tiles.