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 performing operations in expression
 performing operations within parentheses
 perigon
 perimeter
 perimeter of the base
 perimeter of circle
 perimeter of equilateral triangle
 perimeter of sector
 perimeter of triangle
 period
 period of time money is deposited
 periodic compounding
 periodic functions
 periodic pattern
 periodicity of cosine function
 periodicity of cotangent function
 periodicity of sine function
 periodicity of tangent function
 periodicity of trigonometric functions
 permutations
 permutations formulas
 permutations of combinations of size r
 permutations of n objects some of which are the same
 permutations solved problems
 permutations with repetition
 permutations without repetition
 permuted combinations
 permuted combinations formula
 permuted combinations with repetition
 permuted combinations with repetition formula
 perpendicular bisector
 perpendicular bisector of line segment
 perpendicular bisectors
 perpendicular from vertex to opposite side
 perpendicular lines
 perpendicular projection of point onto plane
 perpendicular sides
 perpendicular sides of right triangle
 perpendicular to axis of cone
 perpendicular to axis of parabola
 perpendicular to opposite side
 perpendicular to section through cone axis
 perpendicularity
 perpendicularity of line and plane
 perpendicularity of two planes
 perpendicularity of two vectors
 perpendicularity of vectors
 perpendicularly
 physical applications to definite integral
 physical laws described by mathematical formulas
 physics word problems
 place holders
 place value
 place values in binary system
 place values in decimal system
 place values of binary digits
 place vertex of curve at origin translating its graph
 place-value notation
 planar areas
 plane analytic geometry
 plane bounded by lines
 plane cuts all generators
 plane cuts all generators of single cone
 plane cuts both cones creating hyperbola
 plane cuts tetrahedron
 plane figures
 plane figures solved problems
 plane geometry
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