تحميل صور
in the figure above O is the center of the circle
The segment PA is tangent to the circle
also:
AG parallel to HF
the angle FOH=140 degree
the angle AOH=30 degree
DOG=DOF
what is the measure of angle P?
The perpendicular bisector of one chord is the perpendicular bisector of the other chord too. This bisector is a symmetry-axis of both chords, of the circle and consequently of the two angles of 30° which are left unmarked.
The symmetry-axis is drawn in red in the attached diagram.