 
			 
			MCQOPTIONS
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				| 1. | The_negative_horizontal_plane_and_positive_horizontal_makes_______angle_with_each_other. | 
| A. | 90 degrees | 
| B. | 180 degrees | 
| C. | 120 degrees | 
| D. | 270 degrees | 
| Answer» C. 120 degrees | |