Is the surface of your desk horizontal?
yes
Is the carpet a vertical surface?
No.
Are these perpendicular lines?
no
Give an example of a horizontal surface in the classroom
...
Give an example of a vertical surface or line in the classroom.
...
Draw a set of perpendicular lines on your whiteboard. (Don't forget to mark it)
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How many horizontal faces does a cube have?
2
How many vertical faces does a cuboid have?
4
How many sets of parallel faces does a cylinder have?
1 set
How many horizontal faces in a sphere?
0
How many vertical faces does a pyramid have?
none
How many sets of parallel faces does a cube have?
3 sets
Draw the horizontal face in an upright pyramid.
(square)
How many vertical faces does a cube have?
4
How many sets of parallel faces in a sphere?
0