3-D shapes (age 9+) · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Naming 3-D shapes from flat pictures

Mathematics · Geometry · ages 9-10
Name ______________________   Date ____________

  1. An isometric drawing shows a solid shape with 6 flat rectangle faces and corners that look like a box. What is the shape called?

    • Pyramid
    • Cuboid
    • Cone

  2. Which 2-D net folds into a cube?

    • A net of 6 squares
    • A net of 1 square and 4 triangles
    • A net of 2 triangles and 3 rectangles
    • A ring of 5 squares

  3. How many faces does a cuboid have?

    Answer: ______________

  4. A net shows six rectangles joined together, like a cross made of flat pieces. When it folds up, what 3-D shape does it make?

    • Cuboid
    • Pyramid
    • Cone

  5. An isometric drawing shows a box with a square front and depth equal to its width. What solid is it?

    • A cube
    • A pyramid
    • A cylinder
    • A cone

  6. A cuboid's net is made of six flat rectangle pieces. Once it is folded up, how many faces does the finished cuboid have?

    Answer: ______________

  7. A cuboid measures 3 cm by 4 cm by 5 cm. What is its volume in cubic centimetres?

    Answer: ______________

  8. An isometric drawing shows a solid with one flat square base and four triangle faces that meet at a single point on top. What is this shape called?

    • Pyramid
    • Cuboid
    • Cube

  9. Which statement about isometric drawings is correct?

    • Isometric drawings always look exactly the same for a cube and a cuboid
    • A cube's drawing shows all edges the same length, but a cuboid that is not a cube does not
    • Isometric drawings cannot show cubes

  10. A cuboid has 6 faces. How many faces do 3 identical cuboids have in total?

    Answer: ______________

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Answer key

For grown-ups. Fold this page away before handing over the rest.

Naming 3-D shapes from flat pictures W1-mt_wUSbRt3-qw-s1

  1. Cuboid · Six rectangle faces meeting at square corners make the box shape called a cuboid.
  2. A net of 6 squares · A cube needs 6 square faces.
  3. 6 · A cuboid has 6 faces.
  4. Cuboid · Six rectangle faces fold into a box shape. That box shape is called a cuboid.
  5. A cube · Equal edges all round make a cube.
  6. 6 · Every piece in the net becomes one face of the folded shape, so six pieces make six faces.
  7. 60 · 3 x 4 x 5 = 60 cubic centimetres.
  8. Pyramid · Triangle faces meeting at one point above a flat base is the mark of a pyramid.
  9. A cube's drawing shows all edges the same length, but a cuboid that is not a cube does not · In an isometric drawing, a cube's edges all look equal in length, while a cuboid's edges look uneven because its sides are not all equal.
  10. 18 · 3 x 6 = 18 faces.
Worksheet · LightMySky