- Equilateral triangle
- ･Equilateral triangle(from side) Height and the area are calculated from the length of one side of the equilateral triangle.
- ･Equilateral triangle(from height) Area and length of one side are calculated from the height of the equilateral triangle.
- ･Equilateral triangle(from area) Area and length of one side are calculated from the area of the equilateral triangle.

- Right-angled triangle
- ･Right-angled triangle(base and angle) Height, the oblique side, and the area are calculated from the base and the angle of the right-angled triangle.
- ･Right-angled triangle(height and angle) The base, the oblique side, and the area are calculated from height and the angle of the right-angled triangle.
- ･Right-angled triangle(oblique side and angle) The base, height, and the area are calculated from the oblique side and the angle of the right-angled triangle.
- ･Right-angled triangle(base and height) The oblique side, the angle, and the area are calculated from the base and the height of the right-angled triangle.
- ･Right-angled triangle(base and oblique side) Height, the angle, and the area are calculated from the base and the oblique side of the right-angled triangle.
- ･Right-angled triangle(height and blique side) The base, the angle, and the area are calculated from height and the oblique side of the right-angled triangle.

- Trigonometric function
- ･Trigonometric function from angle Trigonometric function is calculated from the angle (degree or radian).
- ･Angle from trigonometric(inverse trigonometric) The angle is calculated from trigonometric function.(inverse trigonometric function)
- ･convert trigonometric function Trigonometric function is calculated and converted.

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- Calculate triangle

## Calculate triangle

- ･Equilateral triangle(from side)
- ･Equilateral triangle(from height)
- ･Equilateral triangle(from area)
- ･Right-angled triangle(base and angle)
- ･Right-angled triangle(height and angle)
- ･Right-angled triangle(oblique side and angle)
- ･Right-angled triangle(base and height)
- ･Right-angled triangle(base and oblique side)
- ･Right-angled triangle(height and blique side)
- ･Trigonometric function from angle
- ･Angle from trigonometric(inverse trigonometric)
- ･convert trigonometric function