a piece of paper
a sheet of paper
Point
It is the intersection of two planes at the spine of the paper -- two flat regions represented by the two pages of the newspaper. Each is a separate plane, and they cannot be coplanar since there is an angle between them. If you lay the paper out flat, they become a single plane.
A plane is a flat surface that extends infinitely. Think of it as a piece of paper that goes on in every direction (but not "up" out of the paper). A horizontal plan just means that it extends horizontally (like a piece of paper on a desk). Another example would be the floor you are standing on or the ceiling above it. However, your monitor is - more than likely - facing up and down. That is NOT a horizontal plane.
easy
the black hawk
a plane that is well armored and fast and that can hold heavy weights
If on your paper your answers are point, ray, line segment, or plane i think it will be Plane
Paper
Depends on the paper used and how the paper plane was constructed.
the Paper Plane goes back to at-least to the 20'S
The best materials to have for kids crafts are glue, crayola crayons, scissors and paper. A combination of all three of these and basically anything is possible!
The kind of paper chosen to make a paper airplane affects its weight. The best paper for making airplane is the light but firm paper. Firm paper prevents the paper plane from crumbling in the wind.
construction paper airplanes fly further
what can be the constant in the paper plane experiment
I'm sure you could, but then it would not be a paper plane