Geoboard

500+
Downloads
Content rating
Everyone
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About this app

Geoboard:
Buttons:
0=0 Insert new rubber band
T Erase rubber band
Col Change rubber band color
A Calculate area

Drag vertices and edges.
Drag all mesh touching thumbtacks.

Zoom mesh with 'pinch zoom'.


Menu:
Square or isometric mesh.

Practice:
Calculate area contained inside the rubber band (only in square mesh).
Pick's Theorem:
A = I + B/2 -1

A = Area
I = Inner dots.
B = Border dots.

Convex, concave polygons, positive or negative areas:
Triangles
Rectangles
Squares
Tilted rectangles
Tilted squares
Tilted triangles
Farey Sunburst
Updated on
Dec 19, 2021

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

What's new

New pinch zoom. Added logo.