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# Primary Differences Between Prisms and Pyramids

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Know the words to know the content. Geometry is a branch of mathematics that relies heavily on students' understanding of words and their meanings.

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### Primary Differences Between Prisms and Pyramids

1. 1. Primary Differences between Prisms and Pyramids<br />Definitions, Examples, and Non-Examples<br />FLAN 613 – Hannah Higgins<br />
2. 2. Definition of Prisms<br /> A prism is a type of polyhedron that has a flat top that matches its bottom part. All other faces are parallelograms.<br /> The specific name for a prism is based on the name of the 2 identical faces.<br />
3. 3. Definition of Pyramids<br /> A pyramid is a polyhedron that has a point at the top. The base may be any polygon. All other faces must be triangles.<br /> The specific name of a pyramid is based on the shape of the figure on the bottom of the pyramid.<br />
4. 4. Examples of Prisms<br />Triangular prism<br />Rectangular prism<br />Photo Credit: http://www.flickr.com/photos/morethanmaths/4014100537/<br />
5. 5. Examples of Pyramids<br />Actual Pyramid<br />Mathematical representation of a pyramid<br />Photo Credit: http://i.images.cdn.fotopedia.com/flickr-2427530661-hd/World_Heritage_Sites/Middle_East/Egypt/Memphis_and_its_Necropolis_-_the_Pyramid_Fields_from_Giza_to_Dahshu/Giza_Necropolis/Pyramid_of_Khafre/Pyramid_of_Khafre-Giza_Necropolis-hd.jpg<br />
6. 6. Almost Prisms<br />Cylinders look like prisms, but they are different. Circles are not considered polygons.<br />Cylinders have a curved edge connecting the two circles, while prisms have clearly defined edges between rectangular faces.<br />
7. 7. Almost Pyramids<br />Cones look like pyramids, but they are different. The base of a cone is a circle, not a polygon.<br />Cones and pyramids both have a pointy top, but pyramids have clearly defined edges between triangular faces.<br />Photo Credits: http://www.flickr.com/photos/like_the_grand_canyon/3743007993/sizes/l/in/photostream/<br />http://www.freefoto.com/images/21/19/21_19_59---Traffic-Cones_web.jpg<br />
8. 8. Comparing and Contrasting Prisms and Pyramids<br />Both are polyhedrons.<br />Both must have polygon faces.<br />Both cannot have circles.<br />