Geometric Shape Drawer

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Paste a GeoJSON object and validate its structure. Catch missing coordinates, wrong types, and feature errors. Local.

Developer Tools check GeoJSON geometry validator

New

Random shapes appear; compute the area mentally. Multiple choice. For middle schoolers.

Education area geometry quiz

Draw perfect ellipses by dragging focal points and a point on the curve. See the equation update dynamically. Educational.

Educational drawing ellipse geometry math

Calculate the area of an irregular polygon by entering its vertex coordinates. Uses the shoelace formula. Pure math.

Calculator area coordinates geometry polygon

Find the centroid (center of mass) of any convex polygon by entering vertex coordinates. Useful for physics and design.

Calculator calculator centroid geometry polygon

Enter a number of sides (3‑100) and get the correct polygon name (triangle, hectogon). Fun geometry reference.

Educational geometry names polygon reference

Drag the seven tangram pieces to form a target silhouette. Multiple puzzles. Develop spatial thinking. All canvas interactions.

Educational geometry puzzle shapes tangram

Tag: Geometric Shape Drawer