Let’s go step by step to find the 2D shapes on the surface of each 3D shape.
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1. Rectangular Prism (blue box)
This shape has 6 flat faces. Each face is a rectangle.
→ So, the 2D shape found on its surface is:
rectangle
*(Note: Sometimes opposite faces are squares if it’s a cube, but this looks like a regular rectangular prism — so rectangles are correct.)*
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2. Square Pyramid (green pyramid with square base)
This shape has:
- 1 square base
- 4 triangular sides
So, the 2D shapes on its surface are:
square and triangle
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3. Cylinder (blue can-like shape)
A cylinder has:
- 2 circular bases (top and bottom)
- 1 curved surface (which isn’t a flat 2D shape)
But the question asks for “2D shapes found on the surface” — we only count flat surfaces that are 2D shapes. The circles are flat 2D shapes. The curved part is not a 2D polygon, so we don’t list it as a “shape” in this context (usually at this level, they mean polygons or simple plane figures).
→ So, the 2D shape found on its surface is:
circle
*(Some might argue the side unrolls into a rectangle, but since it’s curved in 3D form, most elementary curricula only count the flat faces — the two circles.)*
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4. Triangular Prism (orange tent-like shape)
This shape has:
- 2 triangular bases (front and back)
- 3 rectangular sides
So, the 2D shapes on its surface are:
triangle and rectangle
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Now let’s write the final answers clearly:
Final Answer:
1. rectangle
2. square, triangle
3. circle
4. triangle, rectangle
Parent Tip: Review the logic above to help your child master the concept of 2d and 3d shapes worksheets.