pizer@ecsvax.UUCP (07/08/84)
The following problem was taken off a National High School Math Exam test several years ago. It appears easy, but ends up being fairly difficult to work out. I can't draw the figure for you,however I can describe it It is a semicircle with diameter CAF, with C & F being on the semicircle and A being the center. Point B is a point on the semicircle such that angle BAC is 40 degrees. Point E is a point on segment AF such that angle ABE is 10 degrees. Finally, point D is a point on the semicircle, and not point B such that angle ADE is also 10 degrees. Find angle DAF. Good luck! Billy Pizer (mcnc!ecsvax!pizer) {geometry forever!}