8. skew lines

This is a street sign. This object has lines that are skew. These lines are not parallel and never intersect. The object was found on a street corner. This object is used drivers everywhere to find where theya re going.

http://geometryislife.blogspot.com/2011/05/skew-lines-are-represented-by-street.html

10. Non-congruent alternate interior angles

This is a water tower. This water tower holds non-congruent alternate interior angles. The pink angles are alternate interior angles and because the black lines are not parallel these angles are not congruent. This object helps give water to several people and can be found near the town it supplies with water.

http://www.texasescapes.com/Texas_architecture/Art-of-Water-Tower-Maintenance.htm

6. Adjacent non-supplementary angles

This is a pie. This object holds adjacent non-supplementary angles. These angles are next to each other and do not add up to 180. The object can be found in a kitchen. This object is made by several bakers and normal people around the holiday time. This pie is food industrial specific.

http://preparingyourfamily.com/getting-by-new-normal/

3. Congruent acute or obtuse angles

This is a camping tent. This tent is for people to sleep in the woods, privately. This object holds 2 congruent acute angles in it. This object could be found in many campgrounds when hikers/campers use them. This tent is hospitality industry specific.


http://www.campist.com/archives/treepee-camping-tent.html

9. Segment Bisector

This is a picture. This picture exhibits a segment bisector. The purple line is the segment and the blue line is the bisector which cuts the segment in half. This picture was found in my house. This object is used to add detail and color to a room. Several designers use pictures to accessorize their home's walls. 

7. Supplementary angles that are not a linear pair

This is a magazine. This object is and it has supplementary angles that are not a linear pair. These angles add up to 180 but are not a linear pair because linear pairs are only two angles. The object was found in my mailbox. This object is used by marketers to try and sells their products. It is marketing/advertising industry specific .

5. Vertical Angles

This garden wire contains vertical angles. When two lines cross, the angles opposite form each other are vertical angles. The object was found outside in my garden at my house. This object is biotechnology industrial specific because the wire helps things grow. The wire is placed in the ground with a plant and the plant grows up the wire. Lots or gardeners use these to help in the summer and fall.