Angular size of the Great Orion Nebula (M42)

Do you mean the angular size of the Great Orion Nebula (M42)?

• Commonly quoted: ~65 × 60 arcminutes (≈ 1.1° × 1.0°). (Wikipedia)
• Depending on how much of the faint outer wings you include (and whether you include nearby M43), values up to ~85–90 × 60 arcminutes are reported. (AstroPixels)
• In short: it spans about a degree across—roughly twice the apparent diameter of the full Moon. (Wikipedia)