N I O I P I Q I R I S I T I U I V I W I X I Y I Z

**A**I B I C I D I E I F I G I H I I I J I K I L I MN I O I P I Q I R I S I T I U I V I W I X I Y I Z

## P

Set of points equally distant from a focus and a directrix.

Two lines are parallel if they are in the same plane and never intersect.

A quadrilateral with opposite sides parallel.

Marks of inclusion (symbols: ( and )). Parentheses is the plural form of parenthesis.

Marks of inclusion (symbols: ( and )).

A five-sided polygon.

A fraction or ratio in which the denominator is assumed to be 100. The symbol % is used for percent.

A whole number that is the square of an integer. Example: 16 is a perfect square because 4⋅4=16.

The sum of the lengths of the sides of a polygon.

A way to arrange things in which order is important.

Two lines are perpendicular if the angle between them is 90

The ratio of the circumference of a circle to its diameter (symbol:

A flat surface that stretches into infinity.

A plane that divides a 3−

To draw or graph a point on a number line or on a coordinate plane.

Symbol indicating addition (symbol: +).

A location in a plane or in space, having no dimensions.

An equation of the form

Expressed in terms of distance (from a point called the pole) and angle (with a ray as the initial side of the angle).

A closed plane figure made up of several line segments that are joined together.

A three-dimensional solid that is bounded by plane polygons.

An algebraic expression consisting of one or more summed terms, each term consisting of a constant multiplier and one or more variables raised to integral powers.

An equation of the form

In statistics, population refers to the entire group about which data are being collected.

A real number greater than zero.

A number that indicates the operation of repeated multiplication.

A natural number which has exactly two distinct natural number divisors: 1 and itself.

Calculation of all prime factors in a number.

A geometric solid with two bases that are congruent, parallel polygons and all other faces are parallelograms.

For an experiment, the total number of successful events divided by the total number of possible events.

The result of two numbers being multiplied together.

A fraction whose numerator is less than its denominator.

An equation of fractions in the form:

A statement of equality in which each member is a fraction.

A device for measuring angles.

A three-dimensional figure that has a polygon for a base and all of the faces are triangles having a common vertex.

The theorem that relates the three sides of a right triangle:

**parabola**Set of points equally distant from a focus and a directrix.

**parallel**Two lines are parallel if they are in the same plane and never intersect.

**parallelogram**A quadrilateral with opposite sides parallel.

**parentheses**Marks of inclusion (symbols: ( and )). Parentheses is the plural form of parenthesis.

**parenthesis**Marks of inclusion (symbols: ( and )).

**pentagon**A five-sided polygon.

**percent**A fraction or ratio in which the denominator is assumed to be 100. The symbol % is used for percent.

**perfect square**A whole number that is the square of an integer. Example: 16 is a perfect square because 4⋅4=16.

**perimeter**The sum of the lengths of the sides of a polygon.

**permutation**A way to arrange things in which order is important.

**perpendicular**Two lines are perpendicular if the angle between them is 90

*o*.**Pi**The ratio of the circumference of a circle to its diameter (symbol:

*π*), equaling 3.1415926...**plane**A flat surface that stretches into infinity.

**plane of symmetry**A plane that divides a 3−

*D*object into two parts, each a mirror image of the other.**plot**To draw or graph a point on a number line or on a coordinate plane.

**plus**Symbol indicating addition (symbol: +).

**point**A location in a plane or in space, having no dimensions.

**point-slope equation of a line**An equation of the form

*y*−*y*1=*m*(*x*−*x*1), where*m*is the slope and (*x*1,*y*1) is a point on the line.**polar**Expressed in terms of distance (from a point called the pole) and angle (with a ray as the initial side of the angle).

**polygon**A closed plane figure made up of several line segments that are joined together.

**polyhedron**A three-dimensional solid that is bounded by plane polygons.

**polynomial**An algebraic expression consisting of one or more summed terms, each term consisting of a constant multiplier and one or more variables raised to integral powers.

**polynomial equation**An equation of the form

*P*(*x*)=0, where*P*(*x*) is a polynomial.**population**In statistics, population refers to the entire group about which data are being collected.

**positive number**A real number greater than zero.

**power**A number that indicates the operation of repeated multiplication.

**prime**A natural number which has exactly two distinct natural number divisors: 1 and itself.

**prime factorization**Calculation of all prime factors in a number.

**prism**A geometric solid with two bases that are congruent, parallel polygons and all other faces are parallelograms.

**probability**For an experiment, the total number of successful events divided by the total number of possible events.

**product**The result of two numbers being multiplied together.

**proper fraction**A fraction whose numerator is less than its denominator.

**proportion**An equation of fractions in the form:

*ab*=*cd***proportional**A statement of equality in which each member is a fraction.

**protractor**A device for measuring angles.

**pyramid**A three-dimensional figure that has a polygon for a base and all of the faces are triangles having a common vertex.

**Pythagorean Theorem**The theorem that relates the three sides of a right triangle:

*a*² +*b*² =*c*²