Geometry

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3D Vector Calculator – Dot & Cross Product Compute the length, dot product, angle, and cross product of two vectors in Oxyz space. Circle Calculator – Circumference, Area & Arc Length Compute the circumference, area, arc length, and sector area of a circle from its radius. Perimeter & Area Calculator for Plane Shapes Compute the perimeter and area of rectangles, squares, trapezoids, parallelograms, and rhombuses. Plane Equation & Point-to-Plane Distance Calculator Write the equation of a plane in Oxyz and compute the distance from a point to the plane. Pythagorean Theorem Calculator Find the hypotenuse or a leg of a right triangle with the Pythagorean theorem. Sphere Calculator – Surface Area, Volume & Equation Compute the surface area and volume of a sphere and write the sphere equation in Oxyz. Triangle Area Calculator Calculate the area of a triangle from base and height, three sides (Heron), or two sides and the included a… Volume Calculator for 3D Solids Calculate the volume of cubes, boxes, pyramids, prisms, cylinders, and cones.