To locate Sirius using Orion's Belt, which direction must an imaginary line be extended?
Answer
In the direction away from Aldebaran.
The reliable method for finding Sirius involves extending an imaginary line through the three stars of Orion's Belt, continuing in the direction opposite to Aldebaran.

#Videos
Rigel: The Brightest Star in Orion Constellation - YouTube
Bright Stars of Orion - Betelgeuse, Rigel, Bellatrix, Belt Stars
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What is the celestial rank of Sirius in the night sky?To locate Sirius using Orion's Belt, which direction must an imaginary line be extended?Which constellation is home to Sirius, the Dog Star?What characteristic describes Aldebaran, located in Taurus?What type of star is Rigel, located within Orion?Why does Sirius appear visually supreme compared to physically much more luminous stars like Rigel?Which bright celestial object can sometimes outshine Sirius and remain visible in the early morning glow before dawn?How is Betelgeuse positioned relative to the three aligned stars forming Orion's Belt?What is the seasonal context for easily observing the Orion and Sirius pair in the Northern Hemisphere?Which neighboring constellation of Orion lies to the northwest and contains Aldebaran?