9
Votes

What are the 3D shapes?

By Ryan McGuire on the 10th of January, 2013

10 Answers

  • 5
    Vote

    3D shapes are shapes that are represented in 3 dimensions rather than just flat. At this level they tend to be quite simple. Below is a chart of the most common ones you're likely to come across.

    Name Properties Picture
    Rectangular Prism
    • A prism with rectangular bases.
    • There are six faces.
    • All faces meet at 90 degrees.
    • Opposite faces are parallel.
    rectangular prism
    Cube
    • A prism with six congruent faces.
    • All faces meet at 90 degree angles.
    • Opposite faces are parallel.
    • It is a form of rectangular prism.
    cube
    Triangular Prism
    • A prism with triangular bases.
    • Only the bases are parallel.
    triangular prism
    Hexagonal Prism
    • A prism with hexagons for bases.
    • Opposite faces are parallel.
    hexagonal prism
    Triangular Pyramid, aka Tetrahedron
    • A pyramid with a triangular base.
    • A tetrahedron made up of four equilateral triangles is called a regular tetrahedron.
    triangular pyramid
    Square Pyramid
    • A pyramid with a square base.
    Square pyramid
    Cylinder
    • A solid with two parallel circular bases.
    • If you "unwrap" the middle section and lay it flat, it is a rectangle.
    cylinder
    Cone
    • A solid with a circular base and a curved side that ends in one point
    • It has one vertex.
    cone
    Sphere
    • A solid figure where all points are an equal distance from the center point.
    • It's a ball.
    sphere

    And here's an incribly cheesy video on the subject:

    http://www.youtube.com/watch?v=K9L9l86N-xM

    Refine By henry warren on the 14th of January, 2013

  • 1
    Vote

    3 D shapes are shapes which are 3 dimentional in their look, that is when we look up on that figure it must provide a feeling of viewing a solid. And it must be represented using 3 axis, ie x,y and z.

    Refine By Adersh Antony on the 19th of January, 2013

  • 1
    Vote

    3D Shapes are shapes that contain measurements in three different dimensions. Shapes drawn in two-dimensions are "flat" and do not have depth. For example, a square is a 2D shape. In contrast, a cube is a 3D shape. There are different formulas used to find areas for 2D shapes and 3D shapes in Mathematics.

    There are usually two different desired measurements of area for 3D shapes, as opposed to the basic area measurement of 2D shapes. Depending on your need, and using a Mathematical Formula, you may want to find the Surface Area of a shape (outside), or the Volume Mass of a shape (inside).

    For example:

    Cube Volume = Length x Width x Depth

    Cube Surface Area = Length x Width x 4 (Sides)

    Square Area = Length x Width

     

    Refine By Dawn Lubka on the 15th of January, 2013

  • 1
    Vote

    Lets take a simple example - a building. When you stand right in front of a building, you see only the front side which means 2 dimensions - the height of the builiding and its breadth. When you go around the building, you see another dimension (the third one) which the depth/width of the building. 

    In this case the depth is the distance between the front wall and the back wall of the building.

    Refine By Parvathy Neelakantan on the 15th of January, 2013

  • 0
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    3D shapes means the 3 dimensinal shapes i.e. having length, depth and height eg. the room we sit in is 3 dimensional.

    Refine By pranit on the 17th of January, 2013

  • 0
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    3D shapes are those that represents the shapes of the object in real world. The 3D means three dimensions namely the X,Y and Z axis.

    Refine By Cecil on the 15th of January, 2013

  • 0
    Vote

    3D Shapes are solids that can be represented using 3 axes- X, Y and Z.

    Examples: Cylinder, cube etc

    Refine By madhuchaliyan on the 15th of January, 2013

  • 0
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    3D shapes have faces and sides.

    Refine By Janelle on the 14th of January, 2013

  • 0
    Vote

    A 3D shape is a geometric figure that has three dimensions,width,depth and height

    Refine By jagadish on the 14th of January, 2013

  • 0
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    List of Geometrics Shapes - 3D Shapes

    Here are some common 3D shapes that you should know.

    Along with a picture of each shape, the number of faces, edges and vertices are also given.

    Common properties of the 3D shapes are also given.

    Cube

    3 d shapes cube

    Cubes have 6 faces, 12 edges and 8 vertices.

    All sides on a cube are equal length.

    All faces are square in shape.

    A cube is a type of cuboid.

    Cuboid

    3 d shapes cuboid

    Cuboids have 6 faces, 12 edges and 8 vertices.

    All the faces on a cuboid are rectangular.

    Sphere

    3d geometric shapes sphere

    Spheres have 1 curved face, 0 edges and 0 vertices.

    Cylinder

    list of geometric shapes cylinder

    Closed Cylinders have 3 faces, 2 edges and 0 vertices.

    Closed cylinders have 2 circular or elliptical faces and one curved rectangular face.

    Cone

    shapes for kids cone

    Cones have 2 faces, 1 edge and 1 apex (which is described by some mathematicians as a vertex).

    Triangular Prism

    triangular prism

    Triangular Prisms have 5 faces, 9 edges, and 6 vertices.

    The two faces at either end are triangles, and the rest of the faces are rectangular.

    Hexagonal Prism

    hexagonal prism

    Hexagonal Prisms have 8 faces, 18 edges, and 12 vertices.

    The two faces at either end are hexagons, and the rest of the faces are rectangular.

    Triangular-based Pyramid

    printable 3d shapes triangular based pyramid

    Triangular-based pyramids have 4 faces, 6 edges and 4 vertices.

    The base is a triangle. All of the faces are triangular.

    If the triangular faces making up the prism are all equilateral, then the shape is also called a Tetrahedron.

    Square-based Pyramid

    3d geometric shapes square based pyramid

    Square based pyramids have 5 faces, 8 edges and 5 vertices

    The base is a square. All the other faces are triangular.

    Hexagonal Pyramid

    hexagonal pyramid

    Hexagonal pyramids have 7 faces, 12 edges, and 7 vertices.

    The base is a hexagon. All of the other faces are triangular.

    Refine By AMRITA CHAKRAVARTY on the 21st of January, 2013

Suggested reading…

Draw plans and elevations of 3-D shapes

if we poo in 2 dirctions we must eat it softly NO JOKE!!!

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