1.- Measure the distance B-H, and
place the tip of the compass at point
E to draw an arc that corresponds
to arc G-H.
( see figure )
as the radius, place the tip of the
compass at point I to draw
an arc intersecting the previous
arc at J.
trough the intersection of the
the red and green arc (point J).
- Angle DEF is congruent to angle
ABC.
