- Area of triangle
- ･Area of quilateral triangle Area are calculated from the length of one side of the equilateral triangle.
- ･Base and height of triangle The mathematical formula for area of a triangle calculated from the base and height.
- ･Two side and angle of triangle The area of a triangle is calculated from two side and the angle between those.
- ･One side and both end of triangle The area of a triangle is calculated from one side and the angle at both ends.
- ･Three side of triangle The area of a triangle is calculated from the length of three side.

- Area of quadrilateral
- ･Area of square Area of a square is calculated from the length of one side.
- ･Area of rectangle Area of a rectangle is calculated from the length of vertical and horizontal.
- ･Area of trapezoid Area of a trapezoid is calculated from upper base and lower base, and height.
- ･Area of rhombus The area of a rhombus is calculated from the length of the diagonal.
- ･Area of parallelogram(base and height) Area of a parallelogram is calculated from the base and height.
- ･Area of parallelogram(two sides and angle) Area of the parallelogram is calculated from the two sides and the angle between them.
- ･Area of quadrilateral(four sides and angle) Area of the quadrilateral is calculated from the sum of the length of the four sides and the diagonal.

- Area of circle and sector
- ･Area of circle Area and length of perimeter of a circle is calculated from the radius.
- ･Area of sector Area, length of the arc, and length of chord of sector is calculated from the radius and central angle.
- ･Area of segment Area, length of the arc, and length of chord of segment is calculated from the radius and central angle.

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- Calculate area

## Calculate area

- ･Area of quilateral triangle
- ･Base and height of triangle
- ･Two side and angle of triangle
- ･One side and both end of triangle
- ･Three side of triangle
- ･Area of square
- ･Area of rectangle
- ･Area of trapezoid
- ･Area of rhombus
- ･Area of parallelogram(base and height)
- ･Area of parallelogram(two sides and angle)
- ･Area of quadrilateral(four sides and angle)
- ･Area of circle
- ･Area of sector
- ･Area of segment