usually they r semi-circular because mostly ques in exams are based on angles between 0 and 180 .But also there are 360 degree protractors but they r usually used by architectures.
semi-circle
A 3D semi circle
A semi-circle is a two dimensional shape.
A semi circle is a 2 dimensional shape
No it is a irregular shape
semi circle
it's a semi-sphere circle is to semi-circle as sphere is to semi-sphere
If you are in a airplane rainbows are actually a circle shape,but from our view it is semi-circle.
Yes.
semi circle
a semi circle.. (:
A semi-circle.