PARALLEL
_________
_________
INTERSECT
X
PERPENDICULAR
L OR 90 DEGREES
ADJACENT ANGLES
COMMON VERTEX COMMON SIDE
LINEAR ANGLES
EQUALS TO 180 DEG
HAS TO BE ADJACENT
COMPLIMENTARY
90 DEG IN MEASURE
SUPPLEMENTARY
180 DEG IN MEASURE
NOT NEEDED TO BE ADJACENT
VERTICAL ANGLES
OPPOSITE ANGLES EQUAL IN MEASURE
RIGHT
90 DEG
OBTUSE
MORE THAN 90
STRAIGHT
180 EXACT
ACUTE
LESS THAN 90
REFLEX
MORE THAN 180