false
True.
True. A right angle is 90o so the lines which form it must be mutually perpendicular.
True
true
false ... perpendicular means at 90 degrees. therefore it is not possible
false
True
What is a 'Straight Angle'???? Perpendicular lines meet at 90 degrees ( right- angles).
False.
false. it is parellel to the bases
its false
True.
It equals one skeleton squared.
True
false
true (APEX)