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math final reveiw

A²+B²=C² pythagorean theorom
The sides of a 30,60,90 triangle 1,2,√3
The sides of a 45,45,90 triangle 1,1,√1
triangle with the two sides smaller than hypotenuse obtuse
triangle with the two sides bigger than hypotenuse acute
an inscribed angle = half of its arc
angle outside the circle = subtract the arcs divide by two
angle inside the circle equals add the arcs and divide by two
length of arc = n/360*2pi R
Created by: cbyron