pencil of parallel linespencil of plane algebraic curvespencil of planespencil of spherespendantpendant to each otherpendulumpendulum bobpendulum property of a cycloidpenetrationpensionpentpentapentadpentadecagonpentagonpentagonalpentagonal numberpentagrampentagram of pythagoraspentahedralpentahedronpentanglepentangularpenultpenultimatepeople orientedperper annumper capita incomeperambulateperambulationpercentpercent defectivepercent errorpercentagepercentage distributionpercentage errorpercentage pointpercentilepercentile normpercentile pointpercentile rankperceptionpercussion pressperfectperfect codeperfect competitionperfect competition equilibriumperfect cube
