Add Area
Area Type Rectangle Polygon (triangle, ...) Circle Circle Sector (semi circle, ...)
rext
        x1 \( = \) 
          a \( = \) 
        y1 \( = \) 
          b \( = \) 
rext
        N  =  
       x1  =  
       x2  =  
       x3  =  
Number of vertices.
      y1  =  
      y2  =  
      y3  =  
Write coordinates in counter clock-wise direction.
circle
          r  =  
       x0  =  
 
      y0  =  
circle
          r  =  
       x0  =  
       a1  =  
      y0  =  
      a2  =  
a1 (start angle) and a2 (end angle) are measured in degrees in a counter clock-wise direction.
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List of Areas
No area is added.
Calculation of Moment of Inertia
No area is added to calculate moment of inertias.
Figure