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8.5.0 of MathGraph32 brings the following improvement up :
A new icon is available in the upper toolbar :
.
This icon is a on-off type icon.
When this icon is activated, some tools automatically add objects to complete the figure :
– Midpoint tool :
.
Along with the midpoint are cerated two segemnt marks (associated to two masked "half" segments), along with the segemnt joining the two clicked points (if not already present).
– Perpendicular line tool :
.
Along with the prependicular line is created a right angle mark.
– Perpendicular bisector tool : 
Along with the perpendicular bisector are added two segemnt marks (associated to two masked "half" segments), the segment joining the two clicked points (if not already present), a right angle mark (defined by a masked point linked to the perpendicular line).
– Bisector tool :
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Along with the bisector line are added two segments (if not already present) and two angle marks (using a hidden point linked to the bisector line).
Beware : when the icon
is activated, before using on of the previously mentionned tools , choose the segement mark style and the segment mar by the automatically added objects.
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