Adjacent Non-supplementary Angles

 

The image above is the side of a mirror which people use to look at themselves in. I found it in my dining room. The part of the mirror in the picture has three different pieces. Each piece is positioned at different angle. The angles at which they meet form adjacent non-supplementary angles. These angles are highlighted in blue and green. Another pair of adjacent non-supplementary angles are at the corner of the mirror where two of the pieces of the mirror meet. They are highlighted in orange and yellow and add up to be 90 degrees.

Non-Congruent Alternate Interior Angles On A Seesaw

The object above is a seesaw. Children play on seesaws to amuse themselves. The board on the seesaw where the children (and apple) sit, creates a line. This line is highlighted in dark purple. The ground creates another line which is highlighted in pink. The part of the seesaw holding the board up is highlighted in blue and is a transversal between the purple and pink lines. These three lines create a pair of non-congruent alternating interior angles. These angles are highlighted in yellow. The picture was found on the website:

http://ffden-2.phys.uaf.edu/212_spring2011.web.dir/Samantha_Porreca/Seesaw.html

Skew Lines On A Dining Room Table

The picture above that I took, is of a dining room table in my house's dining room. A dining room table is used by all people to eat on. They can also be used to set things down on or do work on. The highlighted lines on the dining room table are skew lines. Skew lines are will never intersect and are not on the same plane.