1. Circles
Tormentor 1
Given: Circle centre O
CD ⊥ AB
AE = 3
OD = 5
∠AOB = 80°
Find: EB, OE, AO, OB, AD, BD
∠AOC, ∠COB, ∠ADB, ∠CDB, ∠AOD, ∠BOD, ∠AEC, ∠CEB, ∠BED, ∠AED
(Note: Diagram not to scale)