2
If I understand the grammar correctly, the answer is one line.
That's the one usually called the ' x-axis ', but more formally known as the abscissa axis. It divides the plane into the upper/positive half and lower/negative half, and the numbers on it measure how far left or right of center a point is.
Its when a plane gets cut in half by Godzilla, and then its just laying there on the ground open.
Yes. If points are on the same side of a line, they are in a half-plane.
2
-- A line has no plane and no part of one. -- Regarding a plane, go back and look at that word "half" again.
boundary line
In general no. The intersection of two parallel half-planes A and B is either a half-plane (either A or B, when A and B have similar orientation) or the empty set (when A and B have opposite orientation). When A and B are not parallel, their intersection is a maximal open region bounded by the two lines that define A and B, respectively. In this case, the intersection always exists and it is never a half-plane.
8
Yes, a baseball does have a plane of symmetry. When sliced in half along its equator, both halves are mirror images of each other.
you fold the paper in half and you fold it verticaly and you fold it verticaly again and you've got your paper plane.
If I understand the grammar correctly, the answer is one line.
There are more solutions in a half plane
A cylinder and a cone have infinitely many planes of symmetry because of the circular face. However, a cylinder can also be cut in half lengthwise (imaging cutting a soda can in half), while a cone cannot (imagine cutting a ice cream cone in half). Therefore, a cylinder has one more plane of symmetry than a cone.
Flying a plane around the sun would not be feasible as the heat and radiation close to the sun would destroy the aircraft. Additionally, the sun's immense gravitational pull would make it difficult to maintain a stable orbit. Traveling close to the sun would also expose the plane to extreme temperatures that would cause it to malfunction.
That's the one usually called the ' x-axis ', but more formally known as the abscissa axis. It divides the plane into the upper/positive half and lower/negative half, and the numbers on it measure how far left or right of center a point is.