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surface area
terms and formulas used in surface area lesson
| Term | Definition |
|---|---|
| face | a flat surface of a solid |
| edge | it is where two faces meet |
| vertex | it is where three or more edges meet |
| polyhedron | a three-dimensional figure whose faces or surfaces are all polygons |
| prism | a solid with two bases and faces that are all parallelograms |
| pyramid | a solid with one base that could be any polygon and triangle faces |
| cylinder | has two circular bases and a lateral surface |
| cone | has one circular base and a lateral surface that comes to a common point called its vertex |
| lateral surface | a curved surface of a cylinder or a cone |
| base | the face that is used to classify a solid |
| sphere | has only one surface, which is curved, and it has no base |
| hemisphere | half of a sphere that is cut through its center |