Presentation on theme: "Understanding Solid Figures"— Presentation transcript:
1Understanding Solid Figures A Mini Lesson by Diana Dell
2What is a solid figure? A solid figure is a three-dimensional figure. “Three- dimensional” means that the figure has measures in three directions, such as length, width, and height.
3Examples of solid figures: cubespheretriangular prismtriangular pyramidsquare pyramidcylinderrectangular prismcone
4What are the parts of a solid figure? The face is the flat surface of a solid figure.The vertex is the point where three or more edges of a solid figure meet. The vertex is sometimes called a corner.vertexThe edge is the line segment where two faces of a solid figure meet.
5What are the parts of a solid figure? The base is the face of a solid figure by which the figure is named.base
6Examine some solid figures by watching this video clip.
7Some solid figures have a curved surface. conecylindercurved surface
8What’s the difference between a prism and a pyramid? A solid figure whose base is a polygon and whose other faces are triangles with a common vertex is a pyramid.These are pyramids.
9What’s the difference between a prism and a pyramid? A solid figure whose ends are congruent, parallel polygons, and whose sides are rectangles is a prism.These are prisms.
10Practice counting vertices: Remember to count the vertices that you can’t see.84
11Practice counting faces: Remember to count the faces that you can’t see.461
12Click on the solid figure described below. I have one base and one vertex.No, a cylinder has 2 bases.No, this pyramid has 4 vertices!Yes, a cone is correct.
13Click on the solid figure described below. I have 6 square faces and 8 vertices.No, this prism does not have square faces.No, this pyramid has triangular faces.Yes, cube is correct!