Click the Line at angle to line with length button . Using this function you can create Lines at any Angle to another line.

Highlight the upper DK/2 as line of reference. --> The new line follows the cursor.

Move the cursor to the starting point (intersection point between upper horizontal line DK/2 and hex height M) of the angled line until the snap appears and fix it with a mouse click.

From this point, draw a Line rising to the left and fix it.

Dialog box Change parameter: Enter the angle 90+15 and the length 5.^[3]

Add horizontal line above the x-axis at a distance of DW/2 .

Again, click on the button Line at angle to line with length and as line of reference highlight the axis DW/2. --> The new line follows the cursor.

Lead the cursor to the starting point (intersection point between Y axis and the horizontal DW/2) of the angled line until the snap appears and fix it with a mouse click.

Draw an ascending line from the Start point to the right side and fix it with a single mouse click.

Enter the angle 90-15° and the length 5.

Note The length of the angled lines is purposely overly dimensioned initially. Later they will be reduced to the distance dimension of S (width across flat).