UD5 Toolkit
Midpoint Calculator β Find the Center Between Two Points
Find the exact midpoint between two points in a 2D plane. Input (xβ, yβ) and (xβ, yβ) to get the midpoint coordinates and a visual representation.
Tag: Geometric Shape Drawer
13+ toolsSphere Volume & Surface Area Calculator β V = 4/3ΟrΒ³
Compute the volume and surface area of a sphere from its radius or diameter. Instant results with units for math assignments and real-world ball sizing.
Triangle Area Calculator β Base, Height & Heron's Formula
Find the area of a triangle using base & height, three sides (Heron's formula), or two sides and included angle. Includes all formulas and unit conversions.
Ellipse Area Calculator β Ο Γ a Γ b Formula
Find the area of an ellipse (oval) from its semi-major and semi-minor axes. Includes circumference approximation for a complete geometric analysis.
Trapezoid Area Calculator β Bases, Height & Median Formula
Calculate the area of a trapezoid using parallel sides and height. Also finds the median length. Useful for land area estimation and geometry homework.
Interactive Geoboard β Stretch Rubber Bands on Pegs
A virtual geoboard where you can stretch virtual rubber bands around pegs to create polygons. Explore perimeter, area, and angles.
GeoJSON Validator - Online Check Geometry & Properties
Paste a GeoJSON object and validate its structure. Catch missing coordinates, wrong types, and feature errors. Local.
Geometry Area Quiz β Online Calculate Triangle, Circle, etc.
Random shapes appear; compute the area mentally. Multiple choice. For middle schoolers.
Ellipse Drawing Tool - Online Interactive Geometry
Draw perfect ellipses by dragging focal points and a point on the curve. See the equation update dynamically. Educational.
Polygon Name Finder - Online How Many Sides?
Enter a number of sides (3β100) and get the correct polygon name (triangle, hectogon). Fun geometry reference.
Polygon Area Calculator - Online Irregular Shape Tool
Calculate the area of an irregular polygon by entering its vertex coordinates. Uses the shoelace formula. Pure math.
Polygon Centroid Calculator - Online Center of Mass
Find the centroid (center of mass) of any convex polygon by entering vertex coordinates. Useful for physics and design.
Tangram Puzzle - Online Drag & Match Shapes
Drag the seven tangram pieces to form a target silhouette. Multiple puzzles. Develop spatial thinking. All canvas interactions.