Have you ever been given a gift box or party hat? 🎁 Show They're all 3D shapes. 3D shapes are made of vertices, edges, and faces!
Vertices are the pointy bits or the corners where edges meet. Edges are the lines around a shape. Faces are the flat sides that you touch when you hold a shape. Let's look at how many vertices, edges, and faces different 3D shapes have. 👇 Cubes
Cubes have 6 square faces. If you glue 6 square faces together, they becomes a cube with 8 vertices and 12 edges. Rectangular PrismsHere's a rectangular shaped gift box: It's made up of 6 rectangular faces. When you join the sides together, it becomes a rectangular prism with 8 vertices and 12 edges. Tip: All cubes are rectangular prisms, but not all rectangular prisms are cubes. It's kind of like how all squares are rectangles, but not all rectangles are squares. Triangular PrismsHere's a triangular gift box: It's made up of 5 faces (2 are triangles, 3 are rectangles). Triangular prisms have 6 vertices and 9 edges! Can you count them? PyramidsPyramids are made up of 5 faces (4 are triangles, 1 is a square). When you join the faces together, it becomes a square-based pyramid with 5 vertices and 8 edges! CylinderCylinders have 2 circular faces and 1 curved surface. Curved surfaces don't count as faces. Faces are flat. When you wrap the surface around the circles, it becomes a cylinder with 2 edges and 0 vertices. There are no sharp, pointy bits in a cylinder! ConesCones like this party hat are made up of 1 surface and 1 circular face. Cones have 1 vertex and 1 edge. SpheresSpheres have 0 faces, 0 edges and 0 vertices. How would you gift wrap a sphere? It's tough without crumpling paper. Great job! Now, you know all about vertices, faces, and edges! Now, complete the practice. It helps you learn more and remember for longer. How many faces edges and vertices have rectangular pyramid?A rectangular pyramid has 5 faces. Its base is a rectangle or a square and the other 4 faces are triangles. It has 8 edges and 5 vertices.
How many edges does a rectangle prism have?9Triangular prism / Number of edgesnull
How many edges does a rectangle have?4Rectangle / Number of edgesnull
How many faces does a rectangle have?In this case, the shape of the base is a rectangle; so this solid figure is called a rectangular prism. Let's look at an example. This figure has four faces. The base, or the face on the bottom, is a triangle, and the sides are triangles that meet at a vertex at the top.
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How many faces edges and vertices does a rectangular prism have?
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