formula1 Calculation of ○5×○5
formula2 ○4×○6/○3×○7/○2×○8/○1×○9
formula3 "the length of one side except
for rectangular triangle's hypotenuse"
formula4 How to identify multiples
formula5 arithmetic progression's term
formula6 arithmetic progression's sum
formula7 the product's end"0" of natural number
formula8 the number of aliquot
formula9 aliquot's sum
formula10LCM,GCD
formula11circulator
formula12the rationalization of a denominator
formula13double root sign
formula14expansion
formula15"quadratic formula
in case of x's coefficient is even integer"
formula16the relation between solution and coefficien
formula17the number of solution is one
formula18the area of the triangle containing the origin
formula19the area of triangle
formula20internally dividing point
formula21externally dividing point
formula22barycenter
formula23incenter
formula24circumcenter
formula25shortest distance from a point on the X axis
formula26shortest distance from a point on the Y axis
formula27expression of line through one point
formula28slope of two vertical lines
formula29two exact halves of square's area
formula30distance between a point and a line
formula31rate of change
formula32line's slope that intersects quadratic function
formula33parallel straight line crossed quadratic function
formula34Area of triangle on quadratic function
formula35"interior angles' sum and exterior angles' sum
of n square shape"
formula36the sum of star's angles
formula37Dented square shape's angle
formula38"angle made in triangle and angle bisector,
inner center"
formula39 regular triangle
formula40Heron's formula
formula41Brahmagupta's formula
formula42the ratio of inscribed quadrangle's area
formula43Bicentric Quadrilateral's area
formula44Area's ratio when triangle is plyed
formula45bisector of triangle's interior angle
formula46bisector of triangle's exterior angle
formula48"parallel line１of trapezoid's
upper base and lower base"
formula49"parallel line2of trapezoid's
upper base and lower base"
formula50the ratio of trapezoid's area
formula51the ratio of square's area
formula52Pythagorean number
formula53rectangular triangle's confirmation
formula54the triangle that two angles are 75°and 30°
formula55the triangle that two angles are 75°and 60°
formula56the triangle that two angles are 105°and 30°
formula57right triangle' area of 15°,75°,90°
formula58Archesta's theorem
formula59harmonic mean
formula60diagonal line of regular pentagon
formula61parallelogram
formula62Menelaus's theorem
formula63Ceva's theorem
formula64Pappus's theorem
formula65Stuart's theorem
formula67Ptolemy's theorem
formula68Power of a point １
formula69Power of a point 2
formula70Power of a point 3
formula71right triangle's inradius
formula72"an inscribed circle and
the length of tangential line"
formula73triangle's area circumscribed circle
formula74"Euler's theorem
(distance between inner center and circumcenter)"
formula75"the radius of the circle that inscribed
the 60°angle"
formula76the triangle area inscribed circle
formula77regular solid
formula78tetrahedron
formula79"tetrahedron's inscribed sphere and
circumscribed sphere"
formula80the radius of inscribed sphere of tetrahedron
formula81inscribedsphere of quadrangular pyramid
formula82regular quadrangular pyramid
formula83regular octahedron
formula84lateral area and central angle of cone
formula85sphere
formula86rectangle truncated pyramid volume1
formula87rectangle truncated pyramid volume2
formula88truncated cone's volume
formula89volume ratio of delta cone
formula90The volume1 when cutting triangular prism
formula91The volume2 when cutting triangular prism
formula92volume cutted quadrangular prism
formula93delta cone
formula94"The permutation which places different n
（circular permutation ）"
formula95The combination which
formula2 ○4×○6/○3×○7/○2×○8/○1×○9
formula3 "the length of one side except
for rectangular triangle's hypotenuse"
formula4 How to identify multiples
formula5 arithmetic progression's term
formula6 arithmetic progression's sum
formula7 the product's end"0" of natural number
formula8 the number of aliquot
formula9 aliquot's sum
formula10LCM,GCD
formula11circulator
formula12the rationalization of a denominator
formula13double root sign
formula14expansion
formula15"quadratic formula
in case of x's coefficient is even integer"
formula16the relation between solution and coefficien
formula17the number of solution is one
formula18the area of the triangle containing the origin
formula19the area of triangle
formula20internally dividing point
formula21externally dividing point
formula22barycenter
formula23incenter
formula24circumcenter
formula25shortest distance from a point on the X axis
formula26shortest distance from a point on the Y axis
formula27expression of line through one point
formula28slope of two vertical lines
formula29two exact halves of square's area
formula30distance between a point and a line
formula31rate of change
formula32line's slope that intersects quadratic function
formula33parallel straight line crossed quadratic function
formula34Area of triangle on quadratic function
formula35"interior angles' sum and exterior angles' sum
of n square shape"
formula36the sum of star's angles
formula37Dented square shape's angle
formula38"angle made in triangle and angle bisector,
inner center"
formula39 regular triangle
formula40Heron's formula
formula41Brahmagupta's formula
formula42the ratio of inscribed quadrangle's area
formula43Bicentric Quadrilateral's area
formula44Area's ratio when triangle is plyed
formula45bisector of triangle's interior angle
formula46bisector of triangle's exterior angle
formula48"parallel line１of trapezoid's
upper base and lower base"
formula49"parallel line2of trapezoid's
upper base and lower base"
formula50the ratio of trapezoid's area
formula51the ratio of square's area
formula52Pythagorean number
formula53rectangular triangle's confirmation
formula54the triangle that two angles are 75°and 30°
formula55the triangle that two angles are 75°and 60°
formula56the triangle that two angles are 105°and 30°
formula57right triangle' area of 15°,75°,90°
formula58Archesta's theorem
formula59harmonic mean
formula60diagonal line of regular pentagon
formula61parallelogram
formula62Menelaus's theorem
formula63Ceva's theorem
formula64Pappus's theorem
formula65Stuart's theorem
formula67Ptolemy's theorem
formula68Power of a point １
formula69Power of a point 2
formula70Power of a point 3
formula71right triangle's inradius
formula72"an inscribed circle and
the length of tangential line"
formula73triangle's area circumscribed circle
formula74"Euler's theorem
(distance between inner center and circumcenter)"
formula75"the radius of the circle that inscribed
the 60°angle"
formula76the triangle area inscribed circle
formula77regular solid
formula78tetrahedron
formula79"tetrahedron's inscribed sphere and
circumscribed sphere"
formula80the radius of inscribed sphere of tetrahedron
formula81inscribedsphere of quadrangular pyramid
formula82regular quadrangular pyramid
formula83regular octahedron
formula84lateral area and central angle of cone
formula85sphere
formula86rectangle truncated pyramid volume1
formula87rectangle truncated pyramid volume2
formula88truncated cone's volume
formula89volume ratio of delta cone
formula90The volume1 when cutting triangular prism
formula91The volume2 when cutting triangular prism
formula92volume cutted quadrangular prism
formula93delta cone
formula94"The permutation which places different n
（circular permutation ）"
formula95The combination which
