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Watch Video on Arcs and Chords - Geometry Help
Access full lesson containing this video at: http://www.yourteacher.com/... Students learn the following theorems related to arcs and chords. In the same circle or congruent circles, if two arcs ar...
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couldn't we just conclude that 12 is the diameter of the circle?
augh I suck at math =[
to understand this more clearly you need to know 2 proofs.
1. When a line from centre to a chord meets, the chord is then bisected into two equal length and has 90 degree angle
2. A diameter that runs thorugh the chord will bisect the chords in half.
Pretty simple. and then it is easy to find it with simple pythagras