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This level introduces you to the mathematics of
geometrical construction. You will build points, line and circles on-screen
just as you would on paper with a ruler and compasses. You will also find out
how to construct perpendicular and parallel lines and measure lines using the
compass tool.
Return to this foundation level to check on what the basic
buttons do.
Every task uses these buttons:
  
and also
uses one of these special buttons:
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hoose a
topic
