180
A psuedovector is a vector that transform in a proper rotation, but in three dimensions it gains an additional sign flip because of an improper rotation.
8 sided like a stop sign
Stop
American "STOP" sign (135° inner angle).
a school zone ahead
The angle between the part of the street before the STOP sign and the part of the street after the STOP sign is usually a straight angle.
A pentagon is a five-sided polygon, which means that it has five corners. There are other types of polygons, including hexagon (six-sided), heptagon (seven-sided), octagon (eight-sided; like a stop sign), nonagon (nine-sided), and decagon (ten-sided).
The sign for a vertical angle is......(I don't know actually >.
It means STOP. Only a STOP sign should have 8 sides.
An Octagon. ( see a stop sign ).
It is an eight-sided figure; hence, an octagon.
An octogon- like a stop sign