Elements of 3D Objects

Examine the figure below. Which represents the right-side view of the 3-D figure?

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Classify the figure.

• triangular pyramid

• triangular prism

• rectangular pyramid

• rectangular prism

Prism or Pyramid?

• Prism

• Pyramid

I have one curved surface and two flat circular surfaces. Who am I?

• circle

• sphere

• cone

• cylinder

If you looked at my net you would see that I am made out of three rectangles and two isosceles triangles. I have 5 faces and 6 vertices

• Triangular prism

• cuboid

• square-based pyramid

• rectangle

I am a 3D object. I am made up entirely of pentagons, there are 12 in total.

• octahedron

• Square-based pyramid

• Dodecahedron

• pentagonal prism

I am a 3D object made up of 2 octagons and 8 rectangles. Who am I?

• octagon

• octagonal prism

• octagonal pyramid

• dodecahedron

I have two faces, one flat and one curved. I don't have any vertices. Who am I?

• cone

• hemisphere

• pyramid

• sphere

I am a 3D object made up of 8 equilateral triangles. I have a total of 12 edges, 8 faces and 6 vertices. Who am I?

• octahedron

• octagonal prism

• octagonal pyramid

• hexagonal prism

I am a square-based pyramid. Which of the following are true for me?

• 7 edges, 4 faces and 4 vertices

• 8 edges, 4 faces and 4 vertices

• 8 edges, 5 faces and 5 vertices

• 2 edges, 7 faces and 8 vertices