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Area of inscribed triangle

3 videos
This more advanced (and very optional) tutorial is fun to look at for enrichment. It builds to figuring out the formula for the area of a triangle inscribed in a circle!

SSS to show a radius is perpendicular to a chord that it bisects

VIDEO 8:19 minutes
More on the difference between a theorem and axiom. Proving a cool result using SSS

Perpendicular radius bisects chord

VIDEO 6:57 minutes
Simple proof using RSH postulate to show that a radius perpendicular to a chord bisects it

Area of inscribed equilateral triangle (some basic trig used)

VIDEO 11:39 minutes
Problem that requires us to figure out the area of an equilateral triangle inscribed in a circle (A little trigonometry used)