Problem of the week
Given a semicircle with diameter EF as indicated, triangle
ABC with A lying on the diameter, and B and C on the semicircle. AD
bisects ∠BAC, BE bisects ∠ABC, and CF bisects ∠ACB. If AB = 6,
AC = 3, BC = 7, and AD ⊥ EF, find AD.
Send your solution by 12 Aug 2017 on firstname.lastname@example.org
Correct solution received from: