Use
            the Triangle option to draw equilateral or asymmetric triangles.
         
         To paint a triangle:
         
         
            - Click Geometry to display the Geometry
               menu.
            
- Select Triangle from the Geometry box.
               The Equal Sides button
                  appears.
                
- To draw an equilateral triangle, enable
               Equal Sides or press and hold P.
            
- Move to the canvas and click to anchor
               the first vertex of the triangle.
            
- Click to place the second vertex and
               then again to place the third vertex. If you are drawing an equilateral
               triangle, drag the cursor until the triangle is the required size.
               A brush stroke is painted
                  along the sides of the triangle.