none
To make a straight edge, you would need two right angles. Each right angle measures 90 degrees, and when combined, they form a straight line, which measures 180 degrees. Therefore, two right angles together result in a straight edge.
None - the edge is curved so no straight sections to make angles
Two.
45 degree and a 90 degree angles
It is to bisect an angle into equal angles usually done with a pair of compasses and a straight edge
No. Left aligned has a straight leftedge, Right aligned has a straight right edge, Justified has both left and right edges straight.
Any angle can be bisected using a compass and a straight edge.
Anything that has a straight (180 degree) edge. Like a computer screen has 4 straight angles. Or the margin on a piece of paper, that's a straight angle too.
A perpendicular edge is a side of a plane shape that is at right angles (90 degrees) to another edge.
No. But there are straight edge "groups" that are a lot like gangs. But no, straight edge itself is not a gang, and a straight edge person is not a gang member.
A straight edge is used for making perfectly straight lines when drawing. The straight edge is placed on the paper and you use the edge to draw against.
The process can't reasonably be described with text only and no sketches. It consists of the following two major steps. They're both easy with a compass and a straight-edge: 1). Draw a straight line segment, then construct its perpendicular bisector. 2). Construct the angle bisector of any one of the four right angles formed in step-1.