Construct a triangle with sides 8, 6 and 5:

• Select the “Circle with fixed radius” tool . 
• Click on A, then somewhere else in the window. The “Edit Circle” dialog box will appear. 
• Enter 5 in the ‘Radius” field. You may leave "fixed" checked (if you uncheck the box, then you can resize the circle by dragging with the right mouse button).
• Click  "OK" to close the dialog box
  
• Follow a similar procedure to create a circle centered at B with radius 6.
• Create point C at the intersection of the two circles
• The “Well Done!” dialog box should appear.

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