How many vertices does a cone have

Continue with Facebook. Forgot Password? New User? Sign Up. Create your account now. Signup with Email. Gender Male Female. Create Account. Already Have an Account? How many vertices does a cone have? Correct answer is option 'B'. Can you explain this answer? Answer to Question.

Mark each edge as you count. Similar to faces, use a marker, stickers, or sticky notes. Ask: How many edges does a rectangular prism have? Say: The point where edges meet is a vertex. Count the number of vertices a rectangular prism has. Mark each vertex as you count. Ask: How many vertices does a rectangular prism have? Have students find the number of faces, edges, and vertices of a cube and a pyramid. Record the answers in the table. Ask: Why do you think that a rectangular prism and a cube have the same number of faces, edges, and vertices?

Lead students to realize that the faces of a rectangular prism and a cube are all rectangles, but in the case of the cube, the rectangles are squares. A cube is a special type of rectangular prism.

Look at the sphere. Ask: Does a sphere have any edges or vertices? This is not a simple question and requires thinking critically about what an edge or vertex is. For example, many real-world objects that we call spheres, such as soccer balls, are in fact complex solid shapes with many edges and vertices. Say: Look at the cone. Ask: Does a cone have any edges? Again, consider using think-pair-share. Avoid telling students that they are right or wrong. Instead, lead them to see that a cone only has one face, and you need more than one face to form an edge.

Ask: Does a cone have any vertices? Lead students to see that a cone has no edges at least no straight ones! Say: Look at the cylinder.

I recently saw an argument about how many vertices a cone has. First let me define what a vertex is. A vertex or vertices for plural, is the corner where two points meet.

A flat 2D triangle for instance will have 3 vertices, but because a triangle is a 2 dimensional flat shape, it is much easier to determine where its points meet. When you have a two-dimensional shape like a cone, cube, cylinder, and rectangular prism, determining the amount of vertices becomes more complicated. You have to count the vertices from a three-dimensional angle while also keeping in mind, flat surfaces, make up most 3 D shapes.

A cube for instance is just a bunch of 2D Squares joined together. While some have argued that a cone has no vertex because of the rounded meeting point, a cone actually had 1 Vertex as you can see in the picture below.