If you are referring to a shape, then a semi-circle would be the most likely shape that contains one straight side and one curved. Take a look at a protractor, it's a semi-circle.
cylinder
Yes
There is no specific name for such a shape.
no because a quadrilateral has straight sides if it were curved it wouldn't be a polygon because polygons must have straight sides
It could be a sector although that implies that (a) the curved side is part of a circle which it need not be and (b) that the two straight lines meet at the centre of the circle - again an assumption not justified by the requirements of the question.
It has 2 sides - one straight and one curved.
A two-dimensional shape with one curved side and four straight sides can be created, but there is not specific name for such a shape.
Yes
An arc (segment of a circle) has one straight side, and one curved side.
This is a segment of a circle.The straight line is a chord.The curved line is an arc.
It could be a cylinder
Curved, the edge is the on the opposite side of the tip.
A circle or an oval (ellipse) This depends on what one calls a "side". Usually a side needs to be straight, as in the case of polygons.
There is no specific name for such a shape.
no because a quadrilateral has straight sides if it were curved it wouldn't be a polygon because polygons must have straight sides
It could be a sector although that implies that (a) the curved side is part of a circle which it need not be and (b) that the two straight lines meet at the centre of the circle - again an assumption not justified by the requirements of the question.
It has 2 sides - one straight and one curved.
An arc has no straight sides because its part of the circumference of a circle