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Measure angles and circles

Angles, radii and diameters, read off the drawing.

  • How-to
  • 1 min
  • Free and Pro
  • Checked with Fluah 1.0.34

Where to find it

Angle Radius Diameter

Steps

  1. Pick Angle (ShiftG). Click an arm's end, the corner, then the other arm's end.

    An angle of 90.00° at a meeting room door's hinge

  2. Pick Radius (ShiftR). Click the centre, then the edge.

    A radius of 0.90 m on a door swing

  3. Pick Diameter (ShiftD). Click the centre, then the edge.

    A diameter of 1.20 m across a round table
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Updated 6 November 2026