Answer: isogonal

AnswerCrossword Clue
ISOGONALEquiangular
ISOGONALHaving equal angles.
isogonalequiangular; isogonic
isogonalimaginary line, or one drawn on a map, connecting all points of equal magnetic declination
isogonala line indicating the earth's magnetic field, also ISOGONE, ISOGONIC