How do you find the measure of this angle ?

The lines through the sides in the circle indicate that the three sides are all of the same length, and therefore share the same angle.

A shape inside a circle will always have its angles equal 360, so you can find the individual angle with the following equation:



Subtract 120 from both sides.



Divide both sides by 3.



mBC's angle is 80 degrees.

3,843,000 is how that would be read