Geometry in Real Life

Elise Anello

Period 1

January 2, 2013 Table Of Contents Page 1.................................................Parallel Lines

Page 2..........................Two Congruent Objects

Page 3.............................................Vertical Angles

Page 4...................................Perpendicular Lines

Page 5.....................................Intersecting Lines

Page 6.................................Supplementary Angles

Page 7..............................Different Proportions

Page 8.........................................................Adjacent

Page 9..........................................................Similarity

Page 10.......................................Two Dimensional

Page 11.....................................Three Dimensional

Page 12................................................Surface Area

Page 13.............................................................Volume

Page 14.......................................................Diameter

Page 15.....................................................Pythagoras Parallel Lines Parallel lines are lines that remain the same length apart and never touch. In this photo, parallel lines are used as the structure of a home under construction and without them there would not be a stable frame. Two Congruent Objects Congruent objects are objects that have the same angles and measures. A pair of shoes are an example of congruent objects and if the shoes were not congruent they could not be worn. Vertical Angles Vertical angles are two angles whose sides form two pairs of opposite rays. In this photo the two pairs of opposite rays formed by the vertical angles create the windmill, designed that way to use windpower as energy. Perpendicular Lines Perpendicular lines meet and cross at right angles. In this photo, if there were no perpendicular lines the bridge would not be as strong. Intersecting Lines Intersecting lines are lines that meet or cross. In the photo above it is important that the highways that create intersecting lines intersect because they allow drivers to go different directions in the same area. Supplementary Angles Supplementary angles are angles that when added together equal 180 degrees. If the angles in these two examples did not add up to 180 degrees the lines formed by them would not be perfectly straight. Different Proportions Different proportion is the comparative relationship between things as to size or quantity. It is also called a ratio. The pyramids in this photo are different proportions because of their design and construction. This is important because they may show importance and differences, but still remain proportional. Adjacent Adjacent angles have a common vertex and a common side. Similarity Objects that are the same shape and have the same angles and proportions but are different sizes are similar. Two Dimensional An object is 2D when it only has the dimensions of height and width. Three Dimensional Having or seeming to have the dimension of depth as well as height and width. Surface Area Surface area is the extent of a 2D surface enclosed within a boundary. Volume Volume is the amount of space an object occupies. Diameter Diameter is a straight line passing through the center of a circle or sphere. Pythagoras Pythagorean Theorem Pythagorean Theorem is the theorem that the sum of the squares of the lengths of the sides of a right triangle is equal to the square of the length of the hypotenuse.

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# Geometry Scrapbook Project

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