 
			 
			MCQOPTIONS
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				| 1. | The measuring line or the line of heights is the trace or the line of intersection with the _________ plane, of the vertical plane containing the point or points whose heights are to be determined. | 
| A. | ground plane | 
| B. | picture plane | 
| C. | horizontal plane | 
| D. | central plane | 
| Answer» C. horizontal plane | |