# Math Dictionary g

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**G**

**Geometric inequality**A statement in geometry which indicates that quantity is greater than another quantity.

**Geometric mean**The geometric mean, also called the mean proportional, of two numbers a and b is the square root of their product. If a mm b= then m is the geometric mean of a and b .

**Geometric probability**A probability based on geometric relationships such as area, surface area or volume.

**Geometric representation of the circular functions**The representation of circular functions on a circle of unit radius. The trigonometric functions are called circular functions because their values are related to the lengths of specific line segments associated with a circle of unit radius.

**Geometric sequence**(A2T) A set of terms in which each term is formed by multiplying the preceding term by a nonzero constant.

**Geometry**Branch of mathematics that deals with the properties, measurement, and relationships of points, lines, angles, surfaces, and solids.

**Glide reflection**A transformation that is the composition of a line reflection and a translation through a vector parallel to that line of reflection.

**Golden ratio:**When a line segment AB is divided by an interior point P such that AB AP, AP, PB = , the ratio 1 (1 5)2 AB AP = + is called the golden ratio.

**Golden rectangle :**A rectangle whose adjacent sides have a ratio equal to the golden ratio.

**Googol :**Is the number written as 1 followed by 100 zeros: 10,000,000,000,000,000,000,000,000,000,000,000,

000,000,000,000,000,000,000,000,000,000,000,000,

000,000,000,000,000,000,000,000,000,000

In Scientific Notation it is 1 × 10

^{100}

**Gradient :**How steep a straight line is.

**Gram :**A metric unit of mass (weight).

1,000 grams = 1 kilogram

**Greater :**Bigger.The symbol > means greater than (the symbol < means less than).

**Greatest Common Factor :**The highest number that divides exactly into two or more numbers. Abbreviated "GCF". Also called "Highest Common Factor".

**Gross :**Wages or salary before deductions for taxes and other purposes.

**Graphical representation**A graph or graphs used to model a mathematical relationship.

**Great circle**The intersection of a sphere with any plane passing through the center of the sphere.

**Math dictionary g**

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