This document defines and provides examples of various geometric shapes and terms. It defines point, line segment, plane, angle, perpendicular and parallel lines, triangles, squares, rectangles, trapezoids, parallelograms, circles, cylinders, spheres, pyramids, parabolas, and isosceles triangles. For each term, it provides a short definition and example image to illustrate the geometric concept.

1. Geometry In the Real World Project Emily Treacy Block 5 December 11, 2009 http://thumbs.dreamstime.com/thumb_220/1198338527227g10.jpg

2. Point Point: An undefined term in geometry, it names a location and has no size. http://upload.wikimedia.org/wikipedia/commons/1/1b/Ardino-minarets-kevinzim.jpg

3. Line (segment) Line Segment: the set of points consisting of two distinct points and all in between them http://i.ehow.com/images/GlobalPhoto/Articles/2163506/toriigateatombalm-main_Full.jpg

4. Plane Plane: a two-dimensional group of points that goes on infinitely in all directions http://cache.gawker.com/assets/images/gizmodo/2009/11/klein01_01.jpg

5. Angle Line: the union of 2 rays that have the same endpoint; measured in degrees or radians http://www.sakura-hostel.co.jp/blog/0506tods.jpg

6. Perpendicular Lines Perpendicular lines: 2 segments, rays, or lines that form a 90 degree angle http://photos.prosumersinternational.org/images/A_8/6/0/3/33068/Geometric_Buildings_2fc62.jpg

7. Parallel Lines Parallel lines: Two or more coplanar lines that have no points in common or are identical http://www.blogthetalk.com/boc1_lg.jpg

8. Triangle Triangle: A polygon with three sides http://farm1.static.flickr.com/170/411213113_61f2e4254c.jpg?v=0

9. Right Triangle Right triangle: A triangle that has a 90 degree angle http://blog.lib.umn.edu/stau0156/architecture/triangle-building.jpg

10. Pentagon Pentagon : A five-sided polygon http://britton.disted.camosun.bc.ca/jbpentag.jpg

11. Hexagon Hexagon: A six-sided polygon http://www.istockphoto.com/file_thumbview_approve/8275709/2/istockphoto_8275709-hexagons-and-pentagons.jpg

12. Square Square: An equilateral and equianglular quadrilateral http://leblog.exuberance.com/images/MJalbert-SanFrancisco-SoMaArchitecture-2007.jpg

13. Rectangle Rectangle: A quadrilateral whose angles are all right angles http://www.architecture411.com/common/notes/1/sf_ggb_open_1935_400.jpg

14. Trapezoid Trapezoid: A quadrilateral that has at least one pair of parallel sides http://z.about.com/d/architecture/1/0/x/p/ShanghaiWorldFinancialCentreFlickr.jpg

15. Parallelogram Parallelogram: A quadrilateral with both pairs of opposite sides parallel http://www.bdonline.co.uk/Pictures/web/q/x/g/newcastleATC_13.jpg

16. Circle Circle : The set of points on a plane at a certain distance (radius) from a certain point (center) http://libweb.lib.buffalo.edu/bruner/2007/ColumbusCircle/Scaled/pho16.jpg

17. Cylinder Cylinder : The surface of a cylindrical solid whose base is a circle http://wvs.topleftpixel.com/photos/silo_tall_cherry_lake.jpg

18. Sphere Sphere : The set of points in space equidistant from a certain point http://www.corbisimages.com/images/YA020679.jpg?size=67&uid=80FAD905-896A-4E18-99E9-A0BB7F821398

19. Pyramid Pyramid : The surface of a conic solid whose base is a polygon http://media.photobucket.com/image/luxor%20las%20vegas%20pictures/SJM87/luxor2.jpg

20. Parabola Parabola: The geometric shape that has the property of reflecting all signals parallel to its axis to one point my.uen.org/mydocuments/downloadfile?userid=suziestoker&documentid=3070552 Parabola: y = ax2 + bx + c

21. Isosceles Triangle Isosceles Triangle: A triangle with two sides of equal length http://farm1.static.flickr.com/133/409548397_3a4c9ecb7a.jpg?v=0

22. Line LINE: a two-dimensional object that has no endpoints and continues on forever in a plane; formed of infinite points http://i.ehow.com/images/GlobalPhoto/Articles/2163506/toriigateatombalm-main_Full.jpg