False. The term "perpendicular skeleton" typically refers to the axial skeleton, which includes the skull, vertebral column, and rib cage. The arms and legs are part of the appendicular skeleton, which is responsible for facilitating movement and includes the limbs and their attachments to the axial skeleton.
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.
its false
false. it is parellel to the bases
It equals one skeleton squared.
True.
True
false
true (APEX)