About & sources

Geometry Glance is a compact geometry reference for students and adults. It covers common shapes, with the measurements and conditions next to each formula.

It is a reference, not a complete course or an official exam formula sheet. Check what your class or exam permits.

Formula checks

Content checked October 13, 2026. We independently calculate examples and check formula conditions against these sources:

• OpenStax Prealgebra 2e: circles and irregular figures
• University of British Columbia: areas of simple shapes
• University of British Columbia: volumes

Our wording and diagrams are original. Sources are used to check mathematical facts; their illustrations and teaching text have not been copied.

Publisher & contact

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