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Understanding Solid Figures. A Mini Lesson by Diana Dell. What 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. Examples of solid figures:. cube. sphere.
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Understanding Solid Figures A Mini Lesson by Diana Dell
What 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.
Examples of solid figures: cube sphere triangularprism triangular pyramid squarepyramid cylinder rectangularprism cone http://www.harcourtschool.com/glossary/math_advantage/definitions/solid_f5.html
What 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. vertex • The edge is the line segment where two faces of a solid figure meet.
What are the parts of a solid figure? • The base is the face of a solid figure by which the figure is named. base
Some solid figures have a curved surface. cone cylinder curved surface
What’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.
What’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.
Practice counting vertices: Remember to count the vertices that you can’t see. 8 0 4
Practice counting faces: Remember to count the faces that you can’t see. 4 6 1
Click 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.
Click 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!