Math Open Reference
Math Open Reference: Central Angle
A handy reference guide to central angles. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Math Open Reference
Math Open Reference: Inscribed Angle
Learn about inscribed angles with this handy reference guide. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Curated OER
Educational Technology Clearinghouse: Clip Art Etc: Fibula
A brooch, consisting of a pin, and of a curved portion furnished with a hook. The curved portion was sometimes a circular ring or disc, the pin passing across its centre and sometimes an arc, the pin being as the chord, of the arc. The...