It is the diameter of the circle.
a diameter
The line passing through the center of a circle with two endpoints on the circle is the circle's diameter.
A diameter is the length of a chord passing through the center of a circle.
hemispheres
a straight line passing from side to side through the center
A diameter.
diameter
a diameter
The line passing through the center of a circle with two endpoints on the circle is the circle's diameter.
The main parts of a concave mirror are the pole (center point), principal axis (imaginary line passing through the pole and center of curvature), focal point (half the distance between the pole and center of curvature), and the center of curvature (center of the sphere from which the mirror is a section).
Perpendicular to a line passing through the center of the Earth.
The definition of chord is a line segment connecting one point of the circumference of a circle to another without passing through the center.
The diameter of a circle is twice its radius or its largest chord passing through the center of the circle.
Half of a sphere cut by a plane passing through its center.
A diameter is the length of a chord passing through the center of a circle.
hemispheres
a straight line passing from side to side through the center