Composing Three-Dimensional Shapes
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1st Grade Math › Composing Three-Dimensional Shapes
The base, or bottom, of a cylinder is made of up what shape?
Square
Circle
Triangle
Rectangle
Explanation
The base, or bottom, of a cylinder is made up of a circle.
The sides of a rectangular prism are made up of __________.
Rectangles
Triangles
Trapezoids
Circles
Explanation
The sides of a rectangular prism are made up of rectangles.
Using the clues below identify the three-dimensional shape.
- I have 6 flat surfaces.
- Each flat surface is a square.
- I have no curved surfaces.
What am I?
A sphere
A cube
A cylinder
A cone
Explanation
The three-dimensional figure being described in the riddle is a cube. A cube, like a cardboard box or a die from a board game, has six sides, each side is flat, each side is a square, and there are no curved sides. The other answer choices include curved sides and do not have six flat surfaces.
Andy takes two cubes and stacks them on top of each other. What three-dimensional shape did he create?
Rectangular Prism
Cylinder
Cube
Pyramid
Explanation
Andy created a rectangular prism by stacking two cubes on top of each other. A rectangular prism has six flat surfaces, six sides, and four identical faces that are larger than a pair of smaller faces. Each flat surface on a rectangular prism is a square or rectangular shape.
The sides of a cube are made up of ____________.
Squares
Rectangles
Rectangles and squares
Triangles
Explanation
A cube is a 3-dimensional shape with 6 sides. Each side of a cube is a square. Thus, the sides of a cube are made up of squares.
What two shapes can you find in this shape?
A cylinder and a circle
A rectangle and a triangle
A cylinder and a triangle
A rectangle and circle
Explanation
What two shapes can you find in this shape?
A cube and a triangle
A cube and a square
A cube and a trapezoid
A cube and a rectangle
Explanation
What two shapes can you find in this shape?
A cube and a square
A cube and a triangle
A cube and a circle
A cube and a trapezoid
Explanation
Using the clues below identify the three-dimensional shape.
- I have zero flat surfaces.
- I have zero faces.
- I have no edges.
What am I?
Explanation
The shape that is being described in the riddle is a sphere. A sphere has zero faces, flat surfaces, or edges. It can be described as the shape of a ball or round.
Using the clues below identify the three-dimensional shape.
- I have five flat surfaces.
- Four of my surfaces are triangles.
- I have no curved surfaces.
What am I?
Explanation
The three-dimensional figure that is being described in the riddle is a pyramid. A pyramid has four surfaces that are triangles, no curves surfaces, and a total of five flat surfaces. The base of the pyramid in the example is a square. The other figures have curved surfaces and do not match the clues.