B
Contour lines.
When a line segment connecting two points is horizontal the length of the segment can be found by finding the absolute value of the difference in x-coordinates of the two points.
A line segment would connect two points on a plane.
A chord
Two points with a single line connecting them.
isohyet
Isotachs
Contour lines.
x and y axis
That's called an isobar.
meridian
isolines
On a Weather Map, the lines connecting points of equal temperature are called Isotherms.Similarly, the lines that connect points of equal barometric pressure are called Isobars.
On a Weather Map, the lines connecting points of equal temperature are called Isotherms.Similarly, the lines that connect points of equal barometric pressure are called Isobars.
On a Weather Map, the lines connecting points of equal temperature are called Isotherms.Similarly, the lines that connect points of equal barometric pressure are called Isobars.
The line connecting the points is called a chord; the part of the perimeter of the circle enclosed is called an arc; the area between an arc and the chord is called a circular segment.
A straight line connecting two points on a circle is a "Chord". If the chord goes through the center of the circle, it is called, "Diameter".