Segment bisector

This street sign has a segment bisector colored black on it (also numbered 1 in green).  A segment bisector is a line or segment that splits another segment in half. This sign has a vertical segment being bisected by a horizontal segment to show that a left turn is approaching on the left of the main road you're traveling on. The equal segments are shown by the two blue dashes. Road signs are used on all roads to help warn and direct cars preventing accidents. Drivers all over the world use road signs everyday.  State and county workers are responsible for placing road signs in their proper positions. Civil engineers decide where roads should be built and road signs placed.

This was taken when I was driving in my car, on Old County, Rd. in Severna Park, MD.

Skew Lines

This is a picture of three lacrosse sticks that are considered skew lines. For lines to be skew they must never intersect with one another. These line extend on for ever or infinity. All three lacrosse sticks numbered one, two, and three don't intersect at any point, they never touch, so they are all skew lines. Lacrosse sticks are used to play the game lacrosse or to throw a ball for your dog to fetch. Lacrosse sticks are used by professional, collegiate, high school, and club lacrosse players. Dog owners can play catch with their dog using lacrosse sticks as well.

This photo was taken in my kitchen.

Supplementary angles that are not a linear pair

In this photo of a movable stair case there are two angles that are supplementary but not linear pairs. For two angles to be supplementary their measure must add up to 180 degrees. For the the two angles not to be a linear pair they must not share the same vertex and cannot share a side. Angle 1 and angle 2 are supplementary because of the Consecutive Interior Angle Theorem. Consecutive Interior Angle Theorem can apply in this case because lines 3 and 4 or the vertical pipe supports are parallel and a diagonal pipe or transversal (colored red) connects lines 3 and 4. Moveable staircases are used by individuals to complete tasks at a higher level than the base of the stair case.  Moveable stairs are used at Home Depot, libraries, airports and sailing venues to place objects at high levels.

This picture was taken at Annapolis Yacth Club when I was sailing on Sunday.

Adjacent non supplementary angles

This is a picture of a roller coaster which has adjacent non supplementary angles. Adjacent angles are angles that share a vertex and a side, and non supplementary means that the sum of the angle measures can't add up to 180 degrees. In the picture angle 1 and 2 are adjacent because they are next to each other but are both acute angles so they can't add up to 180 degrees. Roller coasters are found usually in amusement parks and either scare people or give them a rush of fun. Constructual engineers, physicists, and amusement park ride control people work with roller coasters.

This can be found on: https://www.cedarpoint.com/images/rides/dragster_tower1.jpg

Vertical Angles

Vertical angles are opposite angles formed by two intersecting lines. The cross found in St. John's church in Severna Park is an example of vertical angles. For vertical angles to occur you must have two lines that intersect but they can't be on the same line. the two angles that are across from one another are vertical angles. The cross has a long line going slightly down to the right and is being intersected by a smaller line pointing diagonally up to the right. From the diagram angle 1 and angle 4 are vertical angles and angle 2 and 3 are vertical angles. The vertical angles are also congruent to one another. The cross is found in Christian churches and is used to worship and remember the suffering Jesus went through when he was crucified. Christians and others use crosses in worship.  Masons and steel workers create crosses for cemeteries and churches. 

Tis photo was taken in my church St. John the Evanglist.

Congruent acute or obtuse angles

The image of my roof has two congruent acute angles(angles 1 and 2). The two base angles are acute which means they are less than 90 degrees. The two base angles are congruent which means that there angle measures are equal to each other. The base angles must be congruent so the weight of the roof is split evenly. Roofs are used on most buildings in the world to give shelter from rain, sleet, snow, wind, hail and other elements. Carpenters, roofers, architects and engineers use this design in constructing buildings.

This photo was taken from my driveway viewing my room's window.

Line perpendicular to a plane

The telephone pole is perpendicular to a plane, which in this case is the ground. In order to have a line that is perpendicular to a plane you need a line to intersect a plane at 90 degrees. The definition of perpendicular is the measure of 90 degrees when two objects intersect. In this case the telephone pole intersects the ground at 90 degrees, so it is a line perpendicular to a plane. Telephone poles are used to connect people using phones to communicate with one another and for transporting electricity. Telephone repairmen, communication engineers, and electrical workers work with telephone poles.

This can be found on: http://fineartamerica.com/featured/a-line-of-telephone-poles-travels-george-grall.html