2D
Regular Polygons: Equilateral Triangle , Square , Pentagon , Hexagon , Heptagon , Octagon , Nonagon , Decagon , Hendecagon , Dodecagon , N-gon Other Polygons: Triangle , Right Triangle , Isosceles Triangle , IR Triangle , Quadrilateral , Rectangle , Rhombus , Parallelogram , Kite , Right Trapezoid , Isosceles Trapezoid , Trapezoid , Cyclic Quadrilateral , Tangential Quadrilateral , Arrowhead , Antiparallelogram , House-Shape , Concave Pentagon , Parallelogon , Threestar , Fourstar , Pentagram , Hexagram , Star of Lakshmi Round Forms: Circle , Semicircle , Circular Sector , Circular Segment , Round Corner , Annulus , Annulus Sector , Ellipse , Stadium , Digon , Spherical Triangle , Reuleaux Triangle , Cycloid , Astroid , Hypocycloid , Cardioid , Parabolic Segment , Arbelos , Salinon , Lune , Oval , Three Circles , Lemniscate , Squircle
3D
Platonic Solids: Tetrahedron , Cube , Octahedron , Dodecahedron , Icosahedron Archimedean Solids: Truncated Tetrahedron , Cuboctahedron , Truncated Cube , Truncated Octahedron , Rhombicuboctahedron , Icosidodecahedron , Truncated Dodecahedron , Truncated Icosahedron Catalan Solids: Triakis Tetrahedron , Rhombic Dodecahedron , Tetrakis Hexahedron , Deltoidal Icositetrahedron , Rhombic Triacontahedron Johnson Solids: Pyramids , Cupolae , Rotunda , Elongated Pyramids , Snub Disphenoid Other Polyhedrons: Cuboid , Square Pillar , Square Pyramid , Regular Pyramid , Pyramid , Regular Frustum , Frustum , Bipyramid , Ramp , Right Wedge , Wedge , Rhombohedron , Parallelepiped , Prism , Oblique Prism , Antiprism , Trapezohedron , Disphenoid , Corner , General Tetrahedron , Truncated Rhombohedron , Stellated Octahedron , Small Stellated Dodecahedron , Great Stellated Dodecahedron Round Forms: Sphere , Hemisphere , Cylinder , Cut Cylinder , Oblique Cylinder , Generalized Cylinder , Cone , Truncated Cone , Oblique Circular Cone , Elliptic Cone , Spheroid , Ellipsoid , Spherical Sector , Spherical Cap , Spherical Segment , Spherical Wedge , Cylindrical Wedge , Cylindrical Sector , Cylindrical Segment , Spherical Shell , Cylindrical Shell , Spherical Ring , Reuleaux-Tetrahedron Torus , Capsule , Lens , Barrel , Paraboloid , Hyperboloid , Oloid , Steinmetz Solids
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Tangential Quadrilateral Calculator
Calculations in a tangential quadrilateral. A tangential quadrilateral is a quadrangle whose sides lie on a circle . So it has an incircle. Enter three of the four sides a, b, c and d, and radius or area. Choose the number of decimal places and click Calculate.
Formulas:
Side lengths, radius and perimeter have the same unit (e.g. meter), the area has this unit squared (e.g. square meter).
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