Composite Solid

My example of a composite solid is this paper towel roll. It shows the properties of a composite solid because it has a solid exterior and a hollow interior. This object was found in my kitchen and is typically used to clean up liquids or dry things. 

Trapezoid

This roof exhibits a trapezoid because it has two congruent bases and non congruent legs. Rooves are used as a covering for a building or house. They are used by almost everyone. I found this object directly behind Severn School.

Regular Hexagon

This is a picture of the side of a dumbbell, it shows a regular hexagon because it has 6 congruent sides. This object was found on the weight rack on my basement and is almost exclusively used for physical fitness.

Non-Congruent Alternate Interior Angles

This is a picture of a ice cream cone, it shows non-congruent alternate interior angles because there are two lines cut by a transversal and they form non congruent angles. Ice cream cones are exclusively used to hold ice cream. There is no specific occupation or scenario where non-congruent alternate interior angles are very relevant, they are sort of random.

Line Perpendicular To A Plane

In this image of a line perpendicular to a plane, an old spice bottle was placed on the floor, old spice is used mainly as body wash. This object is perpendicular to the plane, in this case, the floor, because it is at a 90 degree angle to the plane. This object was found in my house. Many contractors need to use line perpendicular to a plane when building houses to make sure that the walls are straight.

Skew Lines

This is a picture of part of a bookshelf, it exhibits skew lines because the top of the compartment is coplanar to the side, however they will never intersect. This object was found in my bedroom and is mostly used to hold books.

Congruent Isoceles Triangles

This is a picture of the tops of two windows on my neighbors house. The two Isoceles triangles are created when the slope of the roof and the top of the window are connected. Congruent isoceles triangles are used here so that the house looks symmetrical and rain runs off equally on both sides.