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Questions and Answers
What is a characteristic that distinguishes 3D shapes from 2D shapes?
What is a characteristic that distinguishes 3D shapes from 2D shapes?
What is the purpose of the volume formula in 3D shapes?
What is the purpose of the volume formula in 3D shapes?
What is a common feature of pyramids?
What is a common feature of pyramids?
What is another name for a rectangular prism?
What is another name for a rectangular prism?
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What is an example of a 3D shape that can lie on its sides?
What is an example of a 3D shape that can lie on its sides?
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How many sides can the base of a pyramid have?
How many sides can the base of a pyramid have?
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What is a common example of a 3D shape found in daily life?
What is a common example of a 3D shape found in daily life?
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What is a characteristic of a cube?
What is a characteristic of a cube?
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What is an example of a sphere?
What is an example of a sphere?
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What is a characteristic of a prism?
What is a characteristic of a prism?
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What is an example of a cone?
What is an example of a cone?
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What is a polyhedron?
What is a polyhedron?
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What is a characteristic of a cylinder?
What is a characteristic of a cylinder?
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What is a torus?
What is a torus?
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What is a characteristic of a rectangular prism?
What is a characteristic of a rectangular prism?
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Study Notes
What are 3D Shapes?
- A 3-dimensional shape is any solid object with three distinct dimensions (length, width, and height).
- 3D shapes occupy volume and have thickness or depth, unlike 2D shapes.
- Examples of 3D shapes include Torus, Sphere, Cylinder, Cube, Cone.
Types of 3D Shapes
Pyramid
- A pyramid is a solid object with triangular sides converging to a point at the top of the shape.
- The base of a pyramid can have three or more sides.
- Examples of pyramids include the pyramids built in ancient Egypt.
Rectangular Prism or Cuboid
- A rectangular prism is a four-sided object that adds a third dimension to a rectangle.
- Opposite sides of a rectangular prism are equal.
- Examples of rectangular prisms include a mattress.
Cube
- A cube is a solid object that adds a third dimension to a square.
- A cube has all equal sides.
- Examples of cubes include a cardboard box or dice.
Sphere
- A sphere is a solid object that originates from a circle.
- A sphere will roll around due to its round form.
- Examples of spheres include a soccer ball.
Cylinder
- A cylinder adds a third dimension to a circle.
- A cylinder has a circle on either side of the shape.
- Examples of cylinders include a can of soup.
Cone
- A cone is an object with a circular base and a height that extends as a third dimension.
- The circular base comes up to a point, like a pyramid.
- Examples of cones include an ice cream cone.
Other 3D Shapes
Torus
- A torus is a 3D shape that is formed by placing a larger circle around a smaller circle to form a three-dimensional circular shape.
- A torus has no vertices or edges.
- Examples of toruses include a donut or a tire.
Prisms
- A prism is a solid object with identical shapes at the opposite ends, with flat parallelogram sides.
- Examples of prisms include a rectangular prism, square prism, triangular prism, or pentagonal prism.
Polyhedrons
- A polyhedron is a 3D shape that has one or more polygons on all of its sides, with edges and sharp vertices.
- Examples of polyhedrons include a cube, prism, pyramid, tetrahedron, octahedron, dodecahedron, and icosahedron.
Identifying Properties of 3D Shapes
Cube
- 6 total sides
- All sides are squares, and all sides are equal.
Sphere
- Perfectly symmetrical
- No edge or vertices
Cylinder
- Flat, circular base and identical top
- Base and top are parallel
- One round, curved side
Rectangular Prism
- Six rectangular sides
- Opposite sides are parallel and are the same size
- All sides are not equal
Cone
- One circular base
- One pointed top
- One curved, rounded side
Pyramid
- A polygonal base
- Triangular sides that come up to a pointed top
Torus
- Circular shape
- Empty, hollow center
Prism
- Identical shapes at opposite ends of the object
- Multiple flat sides
Polyhedron
- No round edges or sides
- Multiple flat sides in the shape of a polygon
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Description
Learn about 3-dimensional shapes, their characteristics, and different types of 3D shapes, including pyramids.
