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When you put an invisible line through the middle of an object and both sides match.
A line through a circle that does not go through the center of the circle is a secant line. A line through a circle that does go through the center is still a secant line, by the way. Compare this to a line segment that has its two endpoints on the circumference of the circle. That line segment is a cord of the circle. If that cord of the circle passes through the center of the circle, then the cord is a diameter of that circle.
Circle with a line through it is square yards, a square with a line through it is square feet
It's kind of like an invisible line. For example, say you have a square and you want to know how much triangles it has. You automatically know in your head its two because you drew that same line as a diagonal of the square.
There is no name for it except "A line perpendicular to a line segment and passing through its midpoint".
The equator is an invisible line that splits the world in half.
It is the the invisible line that ggoes through the middle of the circle.
The Invisible Line was created on 2008-03-25.
The Prime Meridian is the invisible line at zero longitude
yes
When you put an invisible line through the middle of an object and both sides match.
An invisible boundary, probably.An invisible boundary, probably.An invisible boundary, probably.An invisible boundary, probably.
Mapping an Invisible World was created in 2005.
i dont know
No
I have not seen the invisible world yet.
line of scrimmage