A
C
B
A + B = C
A
C
B
A + B = C
Observer
Angle to
be measured
Moon
Right angle
Sun
Observer
Angle to
be measured
Moon
Right angle
Sun
ABYSSINIA
SOMALILAND
ARABIA
INDIA
Carthage
Cyrene
Alexandria
ABYSSINIA
SOMALILAND
ARABIA
INDIA
Carthage
Cyrene
Alexandria
THE
HELLENISTIC
WORLD