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  • HomeList of all formulas of the site
  • 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 of plane figures
    • 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 for surface area of shapes
    • Perimeter of 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
      • Circumference of a circle
      • Length of an arc
      • Length of an arc, the Huygens formula
      • All formulas for perimeter of geometric figures
    • Volume of geometric shapes
      • 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 for volume of geometric solids
    • Radius of a circumscribed circle
      • Triangle
      • Equilateral triangle
      • isosceles triangle
      • Right triangle
      • Square
      • Rectangle
      • Isosceles trapezoid
      • Regular hexagon
      • Regular polygon
      • All formulas for radius of a circumscribed circle.
    • Radius of a circle inscribed
      • Triangle
      • Equilateral triangle
      • Isosceles triangle
      • Right triangle
      • Square
      • Rhombus
      • Isosceles trapezoid
      • Regular polygon
      • Regular hexagon
      • All formulas for radius of a circle inscribed
    • Geometry theorems
      • The Pythagorean Theorem
      • The law of Sines
      • The law of Cosines
      • Theorems
    • 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 basic formulas of trigonometric identities
    • 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 geometry formulas for any triangles
    • 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 for parallelogram
    • 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 basic formulas for trapezoid
    • Rhombus
      • Side of a rhombus
      • Diagonals of a rhombus
      • Angles of a rhombus
      • All formulas of a rhombus
    • Circle
      • Length of a chord of a circle
      • Height of a segment of a circle
      • All formulas of a circle
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All formulas of a rhombus

a rhombus d rhombus angle rhombus
Side of
a rhombus		 Diagonals of
a rhombus		 Angles of
a rhombus

Rhombus

  • Side of a rhombus
  • Diagonals of a rhombus
  • Angles of a rhombus
  • All formulas of a rhombus

Geometry

  • Area of plane shapes
  • Surface Area
  • Perimeter of figures
  • Volume of geometric shapes
  • Radius of a circumscribed circle
  • Radius of a circle inscribed
  • Geometry theorems
  • Trigonometric identities
  • Triangles
  • Parallelogram
  • Trapezoid
  • Rhombus
  • Circle