Radius is one-half of the diameter of a circle. Therefore, the radius of an eight-inch diameter circle is four inches. The diameter of a circle is a straight line joining a point on the circumference through the centre to the 'opposite' point on the circumference.
A chord is a line segment whose endpoints lie on a circle. A secant is a line (or line segment) that intersects a circle in two places, endpoints NOT on the circle.
"Prime" numbers
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Data in order from smallest to largest or vice-versa is called numerical order. It is a systematic arrangement of numbers.
136.25
9.55
2/3 +4/6 =
It is a square or a rectangle where each interior angle is a right angle of 90 degrees.