Hint  Term 
An entity composed of points. It has no depth and extends infinitely. Thus, it is 2dimensional. It is flat and has no curvatures or gaps.  
Points on the same plane.  
Lines that form at least one right angle.  
One basic choice of how to move in this, either forwards or backwards. Objects of this dimension have length but no width or depth.  
Two basic choices of how to move in this, either forwards, back, left, or right. Objects in this dimension have length and width by no depth.  
Having the same measure.  
A closed figure with no gaps anywhere along its border. It's sides must be coplanar line segments. None of its sides are curved and all its sides are in a single plane. Each side o  
Three basic choices of how to move in this, either forwards, back, left, right, up, or down. Objects in this dimension have length, width, and depth.  
Two nonadjacent angles formed by two intersecting lines.  
A pair of adjacent angles whose non common sides are opposite rays.  
A polygon for which there is a line containing a side of the polygon that also contains a point in the interior of the polygon.  
 Hint  Term 
A polygon for which there is no line that contains both a side of the polygon and a point in the interior of the polygon.  
The intersection of two noncollinear rays at a common endpoint. The rays are called sides and the common endpoint is called a vertex.  
Lines with a pair of endpoints. It is that portion of a line that includes two points on it and all that lies in between.  
The bendless, boundless, continuous 3dimensional set of all points. It contains all lines, planes, and points.  
Points on the same line.  
The statement that two segments are congruent.  
An occupant of a single location or place. It has no width, thickness, or depth. We say that it is dimensionless, or 0dimensional  
A point on a line and all that lies on one side of that point. We thus form these when we choose a point on a line and take all that lies on a side.  
Two angles that lie in the same plane, have a common vertex and a common side, but no common interior points.  
An entity composed of points. It has no thickness or depth, but it does have a length. It is straight and does not curve. It is continuous and has no gaps. It is infinite and has n  

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