Grade 11 Pre-Cal E

After that, she wrote down steps to follow on the board, they were:

1) Place 3 points on the circumfrence of the circle (randomly placed) and label the points, A, B, and C.
2) Make angles ABC and AOC and measure.
3) Plot another point somewhere on the circumfrence, and label it M. Make angles BOM, and BCM, then measure.

Angle ABC ---> Inscribed (1/2 of central angle)
Angle AOC ---> Central angle (twice of inscribed angle)
288/2 = 144 degrees

144 x 2 = 288 degrees

4) Add a point anywhere on the circumfrence between AB or AC, and label it F. Make angle AFC, measure. Add another point anywhere on the circumfrence between AB or AC (whichever one you haven't plotted point F) and label it G. Make angle AGC, measure.

Angles that are all inscribed in the same arc, will all have the same value.

Angles ABC, AFC, and AGC all have the same value (in this case, it's 144 degrees).

And that's the end of it. Now, it's the really really fun part, choosing the next scribe ... HAHA yaaay ! hmmm.. shall I choose my budddy, and my desk neighbour? Or .. send it across the room like she told me to? haha.. hard choice. But oh well, since I'm such a GRRRRREAT friend, I throw it to the other side of the room. Sorry, but I choose, Chricel.