I am less than half if you round me to the nearst tenth i round to 0.5 if you round me to 2 decimal places i round down my hundreths digit is odd

What term best describes a line ans a point that lie in the same plane

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

How to do this , and can some one explain