Answer: isogonic

AnswerCrossword Clue
ISOGONICLike a square
ISOGONICHaving equal angles
isogonicnoting or pertaining to an isogonal line
isogonichaving or pertaining to equal angles
isogonicimaginary line, or one drawn on a map, connecting all points of equal magnetic declination
isogonica line indicating the earth's magnetic field, also ISOGONAL, ISOGONE