1. Prism A solid object with two identical bases and flat sides. If you slice a prism parallel to the bases (like bread), the cross sections are identical. The shape of the bases give the prism its name: Triangular prism Rectangular prism Hexagonal prism

2. Edge, Face and Vertex of a prism EDGE: A line segment joining two corners. FACE: Any of the individual surfaces of a solid object. VERTEX: A point where two or more straight lines meet. A corner.

3. Surface Area The total area of the faces of a three-dimensional object. Example: the surface area of a cube is the area of all 6 faces added together. The formula for the surface area of a cube is SA = 6(Edge Length) 2

4. Volume The amount of 3-dimensional space an object occupies. Formula for Volume of a Prism is base area times height: V = B h B = Area of the base10 * 5 = 50 h = height of the prism4 Volume = 50 * 4 = 200 units 3

5. Net A pattern that you can cut and fold to make a model of a solid shape.

6. Cylinder A solid object with: two identical flat bases that are circular and one (curved) side. Cross-sections parallel to the base are circular discs (smaller cylinders).

7. Pyramid A solid object where: The base is a polygon (a straight-sided flat shape with three or more sides) The sides are triangles which meet at the top (the apex). The base determines the name of the pyramid Square pyramidPentagonal pyramid

8. Cone A 3-dimensional solid with a circular base joined to a curved side that ends in an apex point. Net of a cone

9. Concave: (adj) Having a shape like the inside of a bowl. Curving inward. Concavity: (adj) the quality of being concave. Or (noun) a shape that is concave.