Help with geometry please?
Please help and explain. I don't understand. It has to do with arcs.
- 10 years agoFavorite Answer
a> you know m. arc CE is 121 and the m. arc DC is 59 so you find m. arc DE by 59 from 121
---------the answer is 62 deg.
b> since AD is the diameter, it cuts the top part of the circle into 180 deg. (a semi-circle)
you found that m. arc DE is 69 so you find AE by subtracting 69 from 180
c> to find the m. of major arc AEC, you need to know the m. of the [minor] arcs CD, DE, and AE and add them.
f> to find the m. of major arc BDC you need to know the m. of all the arcs from B to C going counterclockwise.
g>for the last one, since that major arc includes everything except arc AB, you subtract 36 from 360(the measure of a full circle).
answer--------324 deg.Source(s): i just learned about arcs last month