Category: Flat figures
Find the perimeter of a square
A square is a quadrangle in which all sides are equal and the angles between the sides are also equal. All corners of the square…
Find the perimeter of a triangle
The perimeter is the length of all sides of the polygon. The perimeter is denoted by a capital Latin letter P. There are several ways…
Circle segment area
A segment of a circle is the part of a circle that is bounded by an arc of a circle and its chord. Our online…
Circle sector area
A sector of a circle is the part of a circle bounded by an arc and two radii connecting the ends of the arc to…
Find the area of a sector of a ring
A ring sector is the part of a circle bounded by an outer and inner arc and two radii connecting the ends of the arcs…
Quadrangle area
A quadrilateral is a polygon with four vertices and four sides. No three vertices of a quadrangle lie on one straight line Distinguish between convex…
Calculation of the area of the ring
A ring is a flat geometric figure bounded by two concentric circles. The area of the ring is defined as the difference between the areas…
Ellipse area calculator
An ellipse is a closed curve on a plane, which can be obtained as the intersection of a plane and a circular cylinder, or as…
Calculation of the area of the trapezoid
Trapezoid is a convex quadrilateral with two sides parallel. Often a condition is added to the definition of a trapezoid that the other two sides…
Parallelogram area calculator
A parallelogram is a quadrilateral in which opposite sides are pairwise parallel, that is, they lie on parallel lines. Special cases of a parallelogram are…