false
True.
True
False
Select one: a. False; the angles may be supplementary. b. True c. False; one angle may be in the interior of the other. d. False; the angles may be adjacent.
True. If four points are collinear, they all lie on the same straight line, which means they can also be contained within a single plane. In geometry, any set of collinear points is inherently coplanar, as you can always define a plane that includes them.
false
True.
true
true
True
True
Not necessarily. The Tropic of Cancer, and the Tropic of Capricorn, imaginary lines on the surface of the earth (an approximate sphere), are parallel but they are not coplanar. You could draw similar lnes on a proper sphere that were parallel but not coplanar.
Yes. Parallel Lines are also two coplanar lines that do not intersect.
false
true
True
true (APEX)