 | Area of a equilateral triangle | | |
| Calculates the area, perimeter and height of an equilateral triangle from the base length.
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| | Area of a triangle from base and height | | |
| Calculates the area of a triangle from the base length and the height. |
| | Area of a triangle (Heron's formula) | | |
| Calculates the area of a triangle using Heron's formula from the length of three sides. |
| | Area of a square | | |
| Calculates the area and perimeter of a square from the side length. |
| | Area of a rectangle | | |
| Calculates the area and perimeter of a rectangle from the horizontal and vertical lengths. |
| | Area of a trapezoid | | |
| Calculates the area of a trapezoid from the length of the two parallel sides and the height. |
| | area of a rhombus | | |
| Calculates the area, perimeter and peak angles of a rhombus from the diagonal lengths. |
| | Area of a parallelogram | | |
| Calculates the area of a parallelogram from the base length and the height. |
| | Area of a regular polygon | | |
| Calculates the area, perimeter, peak angle and number of diagonal lines of a regular polygon from the known number and the length of sides. |
| | Area of a circle | | |
| Calculates the area and circumference of a circle from the radius or diameter. |
| | Area of a circular sector | | |
| Calculates the area, circular arc and chord of a circular sector from the radius and central angle. |
| | Area of a arch | | |
| Calculates the area, cord and circular arc of a arch from the radius and central angle. |
| | Area of an ellipse | | |
| Calculates the area, circumference, ellipticity and linear eccentricity of an ellipse from the semimajor axis and semiminor axis. |
| | Area of a parabolic arch | | |
| Calculates the area and circular arc of a parabolic from the height and cord. |
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