Skew Lines

This is a coffee table and the blue lines shown above form skew lines. Skew lines never intersect but aren't parallel. This object was found in a magazine but in the real world coffee tables are used as decoration and they are also used as a place to set things. This is found in the marketing/adverting industry because it is a picture in a magazine. I took this picture. 

Segment bisector

This is a mullion. The segment is highlighted in pink and the bisector is blue. The blue lines bisects teh pink line, which makes it a segment bisector. It also creates 4 right angles and is congruent.This object was found in my house. Mullions go across windows to divide them into equal sections. They are also used as decoration. This is from the marketing industry. Mullions are used in nice houses and if a realtor wanted to sell a house they might show the customers the mullion. I took this picture.

Vertical Angles

This is a picture of floor tiles. Their angles create vertical angles and they are all congruent because they are formed by the same lines at the same angles. For example, 1 and 3 are vertical angles and 4 and 2 are vertical angles. This object was found in my kitchen, but tiles can be found in many places. In the real world tiles are used as a from of flooring, wall coverings, or counter coverings. They can be found outside and inside. In the real world carpenters use them and any person who walks on them uses them. I took this picture. 

Angle Bisector

This is a window frame. The angle is highlighted in purple and the bisector is yellow. The bisector is the middle of the angle. The window frame was found inside my house. In the real world a carpenter uses this because they frame the windows. Window frames are used to decorate windows. I took this picture. 

Two Congruent Acute Angles

This is a picture of a decoration in a magazine. The angles I traced represent acute angles since they are less than 90 degrees. They are congruent because the angles are the same amount apart. It is specific to the advertisement industry because it is for sale in a magazine. In real life decorations like these are used to add to a room, and make it look more fancy. I took this picture. 

Line Perpendicular to a Plane

This is a picture of a sun clock. A sun clock is a stone used to tell time in relation to the sun. This object is always found outside, since it requires the sun to use. In the real world, there are not many people who use it. I traced the plane in red and the perpendicular line in purple. The purple line is perpendicular to the rest of the clock because the perpendicular line intersects with the plane.  http://www.google.com/imgres?um=1&hl=en&client=safari&rls=en&biw=1186&bih=640&tbm=isch&tbnid=dwAOIC8E-1yseM:&imgrefurl=http://et.wikipedia.org/wiki/Pilt:Sun_clock_in_Valka.jpg&docid=DBJe9qIHV-amBM&imgurl=http://upload.wikimedia.org/wikipedia/commons/f/fc/Sun_clock_in_Valka.jpg&w=640&h=480&ei=gcWJUPzMA82I0QGNz4C4Aw&zoom=1&iact=hc&vpx=115&vpy=186&dur=5593&hovh=194&hovw=259&tx=185&ty=123&sig=101161591993119626923&page=1&tbnh=135&tbnw=168&start=0&ndsp=18&ved=1t:429,r:0,s:0,i:96

Three or more Parallel lines

Three or more coplanar parallel lines 

This is a staircase that contains three or more parallel lines because the three lines never intersect. Stairs can be found inside and outside. Stairs are used in the real world to go up and down to different levels in buildings. This falls under marketing industry because this picture was advertising a house.

I found this picture online http://www.google.com/imgres?um=1&hl=en&biw=1186&bih=640&tbm=isch&tbnid=apDp1_Y2V04jPM:&imgrefurl=http://my-creativebook.blogspot.com/2012/01/stairs-strairs-stairs.html&docid=ZEBCmOkK8vI8IM&imgurl=https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIhU7CbrmNU5KQKJxtjJtzRDNncv6lgPHangK49N7SKrjwHWEy-EqQUvwfZOM-CvVWK8aVtnBAo0w_uQmhidYeE_wDGRypqkBAbOHoEJLeWoZQdwE4tbyBJCBFG3h4jgkOZptAy1rRywo/s1600/stairs-cool.jpg&w=450&h=598&ei=1b6JUJTwFOSE0QGryoGAAg&zoom=1&iact=hc&vpx=831&vpy=285&dur=154&hovh=259&hovw=195&tx=124&ty=188&sig=101161591993119626923&page=1&tbnh=137&tbnw=97&start=0&ndsp=20&ved=1t:429,r:12,s:0,i:171