Compose Shapes Studio

Pick small shapes and combine them to build bigger ones. Two triangles make a square, two squares make a rectangle, and two semicircles make a circle.

Choose your level:

Build this shape

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Large Square

Can you make a square using exactly 2 triangles?

You need 2 pieces

Score: 0
Two right triangles fit together to make a square.

Pick a shape to add:

Your pieces:

No pieces added yet. Tap a shape above to start.

Reference Guide

Composing Shapes

  • Composing means putting smaller shapes together to make a new shape.
  • Two triangles can form a square or a rectangle.
  • Two semicircles form a circle.
  • Noticing how shapes fit together builds spatial thinking.

Why Shapes Fit Together

  • Shapes can be rearranged without changing their area.
  • A right triangle has one corner that is exactly 90 degrees.
  • Two right triangles with the same size fit perfectly to make a rectangle.
  • This is how puzzle pieces and tiles cover flat surfaces.