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Geometry
Area of plane shapes
Area of a triangle
Area of a right triangle
Heron's formula for area
Area of an isosceles triangle
Area of an equilateral triangle
Area of a triangle - "side angle side" (SAS) method
Area of a triangle - "side and two angles" (AAS or ASA) method
Area of a square
Area of a rectangle
Area of a parallelogram
Area of a rhombus
Area of a trapezoid
Area of an isosceles trapezoid
Area of a regular polygon
Area of a circle
Area of a sector of a circle
Area of a circular segment
Area of an annulus
Area of a sector of an annulus
Area of an ellipse
All formulas for area
Surface Area
Cube
Rectangular prism
Sphere
Spherical segment
Spherical zone
Spherical sector
Cylinder
Cone
Truncated cone
Regular pyramid
Regular truncated pyramid
All formulas
Perimeter of figures
Triangle
Rectangle
Square
Parallelogram
Rhombus
Trapezoid
Circumference of a circle
Length of an arc
Length of an arc, the Huygens formula
All formulas
Volume of geometric shapes
Cube
Rectangular prism
Sphere
Spherical segment
Spherical zone
Spherical sector
Cylinder
Cone
Truncated cone
Pyramid
Truncated pyramid
Regular pyramid
Regular triangular pyramid
Regular quadrangular pyramid
Regular tetrahedron
All formulas
Radius of a circumscribed circle
Triangle
Equilateral triangle
isosceles triangle
Right triangle
Square
Rectangle
Isosceles trapezoid
Regular hexagon
Regular polygon
All formulas
Radius of a circle inscribed
Triangle
Equilateral triangle
Isosceles triangle
Right triangle
Square
Rhombus
Isosceles trapezoid
Regular polygon
Regular hexagon
All formulas
Geometry theorems
The Pythagorean Theorem
The law of Sines
The law of Cosines
All formulas
Trigonometric identities
Sum of angles
Difference of angles
Double angle
Triple angle
Half-angle
Functions squared
Functions cubed
Sum of functions
Difference of functions
Product of functions
All formulas
Triangles
Side of a triangle
Height of a triangle
Bisector of a triangle
Median of a triangle
Sides of an isosceles triangle
Height, Bisector and Median of an isosceles triangle
Sides of a right triangle
Height of a right triangle
Bisector of a right triangle
Median of a right triangle
Height, Bisector and Median of an equilateral triangle
All formulas
Parallelogram
Sides
Diagonals
Angles
Angles between diagonals
Height of a parallelogram and the angle of intersection of heights
The sum of the squared diagonals
The length and the properties of a bisector
All formulas
Trapezoid
Side of a trapezoid
Diagonal of a trapezoid
Midline of a trapezoid
Height of a trapezoid
Sides of an isosceles trapezoid
Diagonals of an isosceles trapezoid
Midline of an isosceles trapezoid
Height of an isosceles trapezoid
Sides (bases) of a right trapezoid
Lateral sides and height of a right trapezoid
Diagonal of a right trapezoid
Midline of a right trapezoid
All formulas
Rhombus
Side of a rhombus
Diagonals of a rhombus
Angles of a rhombus
All formulas
Circle
Length of a chord of a circle
Height of a segment of a circle
All formulas
All basic formulas of common geometry
Area of plane shapes
Area of a triangle
Area of a right triangle
Area of a triangle, Heron's formula
Area of an Isosceles triangle
Area of an equilateral triangle
Area of a triangle - "side angle side" (SAS) method
Area of a triangle from a side and two angles (AAS or ASA) method
Area of a square
Area of a rectangle
Area of a parallelogram
Area of a rhombus
Area of a trapezoid
Area of an isosceles trapezoid
Area of a regular polygon
Area of a circle
Area of a sector of a circle
Area of a circular segment
Area of an annulus
Area of a sector of an annulus
Area of an ellipse
All formulas of this section
Perimeter of a figures
Perimeter of a triangle
Perimeter of a rectangle
Perimeter of a square
Perimeter of a parallelogram
Perimeter of a rhombus
Perimeter of a trapezoid
Perimeter of a circular disc or the circumference of a circle
Length of an arc
Length of an arc, the Huygens formula
All formulas of this section
Radius of a circle inscribed
Radius of a circle inscribed in a triangle
Radius of a circle inscribed in an equilateral triangle
Radius of a circle inscribed in an isosceles triangle
Radius of a circle inscribed in a right triangle
Radius of a circle inscribed in a square
Radius of a circle inscribed in a rhombus
Radius of a circle inscribed in an isosceles trapezoid
Radius of a circle inscribed in a regular polygon
Radius of a circle inscribed in a regular hexagon
All formulas of this section
Trigonometric identities (sine, cosine, tangent, cotangent )
Formulas express trigonometric functions of sum of angles
Formulas express trigonometric functions of difference of angles
Formulas express trigonometric functions of double angle
Formulas express trigonometric functions of triple angle
Formulas express trigonometric functions of half-angle
Trigonometric functions squared (sine, cosine, tangent and cotangent)
Trigonometric functions cubed (sine, cosine, tangent and cotangent)
Sum of trigonometric functions (sine, cosine, tangent)
Difference of trigonometric functions (sine, cosine, tangent)
Product of trigonometric functions (sine, cosine, tangent and cotangent )
All formulas of this section
Parallelogram
Sides of a parallelogram
Diagonals of a parallelogram
Angles of a parallelogram
Angles between diagonals of a parallelogram
Height of a parallelogram and the angle of intersection of heights
The sum of the squared diagonals of a parallelogram
The length and the properties of a bisector of a parallelogram
All formulas of this section
Rhombus
Side of a rhombus
Diagonals of a rhombus
Angles of a rhombus
All formulas of this section
Circle
Length of a chord of a circle
Height of a segment of a circle
All formulas of this section
Surface Area
Surface Area of a cube
Surface Area of a rectangular prism
Surface Area of a sphere
Surface Area of a spherical segment
Surface Area of a spherical zone
Surface Area of a spherical sector
Surface Area of a cylinder
Surface Area of a cone
Surface Area of a truncated cone
Surface Area of a regular pyramid
Surface Area of a regular truncated pyramid
All formulas of this section
Volume of a bodies
Volume of a cube
Volume of a rectangular prism
Volume of a sphere
Volume of a spherical segment
Volume of a spherical zone
Volume of a spherical sector
Volume of a cylinder
Volume of a cone
Volume of a truncated cone
Volume of a pyramid
Volume of a truncated pyramid
Volume of a regular pyramid
Volume of a regular triangular pyramid
Volume of a regular quadrangular pyramid
Volume of a regular tetrahedron
All formulas of this section
Radius of a circumscribed circle
Radius of the circumcircle of a triangle
Radius of the circumscribed circle of an equilateral triangle
Radius of the circumscribed circle of an isosceles triangle
Radius of the circumscribed circle of a right triangle
Radius of the circumscribed circle of a square
Radius of the circumscribed circle of a rectangle
Radius of the circumscribed circle of an isosceles trapezoid
Radius of the circumcircle of a regular hexagon
Radius of the circumscribed circle of a regular polygon
All formulas of this section
Geometry theorems
The Pythagorean Theorem
The law of sines
The law of cosines
All formulas of this section
Triangle
Side of a scalene triangle
Height of a scalene triangle
Bisector of a scalene triangle
Median of a scalene triangle
Isosceles triangle
Sides of an isosceles triangle
Height Bisector and Median of an isosceles triangle
Right triangle
Sides (legs and hypotenuse) of a right triangle
Height of a right triangle
Bisector of a right triangle
Median of a right triangled
Equilateral triangle
Height Bisector and Median of an equilateral triangle
All formulas of this section
Trapezoid
Side of a trapezoid
Diagonal of a trapezoid
Midline of a trapezoid
Height of a trapezoid
Isosceles trapezoid
Side of an isosceles trapezoid
Diagonal of an isosceles trapezoid
Midline of an isosceles trapezoid
Height of an isosceles trapezoid
Right trapezoid
Sides (bases) of a right trapezoid
Lateral sides and height of a right trapezoid
Diagonal of a right trapezoid
Midline of a right trapezoid
All formulas of this section