Grade 1 Math · Spatial Sense

2D shapes, 3D objects, and matching halves

Sort 2D shapes from 3D objects, identify faces of 3D objects, and decide whether something has two matching halves. Unlimited questions, five difficulty levels, and a full worked solution every time — free.

Practice this skill Curriculum: G1-E1.1, G1-E1.2, G1-E1.3

Try one

Which flat (2D) shape do you see on the face of a cone?

  • circle
  • rectangle
  • square
  • triangle

Answer: circle

See one solved, step by step

Three of these are solid, 3D objects. Which one is different?

  • rectangle
  • sphere
  • cone
  • cylinder
📘 Worked solution
1cylinder, cone, sphereThese three are all solid, 3D objects.
2rectanglerectangle is a flat 2D shape, not a solid object.
3Answer: rectangleIt does not match the other three.

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