This document defines and provides examples of common geometric shapes found in the real world, including points, lines, planes, angles, triangles, rectangles, circles, spheres, and other polygons and three-dimensional shapes. Examples such as road signs, fences, clocks, and more illustrate how basic geometric concepts are all around us in everyday life.

1. Geometry in the Real WorldBy: Matthew Dickey 1st1

2. PointPoint- It names a specific location and has no sizeThis is a nail hammered into a wall in the garage 2

3. Line (segment)Line segment- A straight path that has no thickness and extends foreverThis is a picture of a highway road stripe3

4. Plane Plane- Flat surface that has no thickness and extends foreverThis is a football field enzone and the surface of the field is a plane4

5. Angle Angle- A figure formed by two rays with a common endpointThis is a door frame that forms a 90 degree angle5

6. Perpendicular linesPerpendicular lines- Intersecting lines that form 90 degree anglesThe bars on this fence form 90 degree angles to one another6

7. Parallel LinesParallel lines- Lines in the same plane that don’t intersectThese tube rails on a road bridge are parallel to each other7

8. Triangle Triangle- A three sided polygonThis is a TV tray and the legs form aTriangle.8

9. Right TriangleRight Triangle- A triangle with one 90 degree angleThis is a power pole and the Wire, brace, and pole make up a right triangle 9

10. PentagonPolygon- A five sided polygonThis is a crosswalk sign that forms a Pentagon10

11. HexagonHexagon- A six sided polygonThese are hexagon shaped pavestones11

12. SquareSquare- Quadrilateral with four congruent sides and four right anglesThis is a Road work sign that is a square12

13. RectangleRectangle- A quadrilateral with four right anglesThis is a street sign that forms a rectangle13

14. TrapezoidTrapezoid- A quadrilateral with exactly one pare of parallel sidesThis is a bank sign that is a trapezoid14

15. ParallelogramParallelogram- A quadrilateral with two pairs of parallel sidesThis is the Arby’s logo and it forms a parallelogram 15

16. CircleThe set of points that are in a plane that are a fixed distance from a given pointThis is a big clock on a tower that forms a circle16

17. CylinderCylinder- A three dimensional figure with Two parallel congruent circular bases and a curved lateral surface that connects the bases This is a transformer on a power pole that makes a cylinder 17

18. SphereSphere- The set of all points in space that are fixed distance from a given point This is a sphere shaped light bulb cover18

19. OctagonOctagon- An eight sided polygonThis is a stop sign that forms a octagon19

20. ConeCone- A three dimensional figure with a circular base and a curved lateral surface that connects the base to a point called the vertexThis is the top of a lava lamp that forms a cone20

21. CubeCube- A prism with six square facesThis is a Rubik cube that forms a cube21