Subject	convex mirror
Predicate	form
Object	virtual image
Modality	Modality Occurrences only 1 always 2
Polarity	POSITIVE
Plausibility	0.7984
Neighborhood Sigma	0.7986
Local Sigma	0.9106
Example Sentences	Sentence Occurrences Source convex mirrors form virtual images 4 Google Autocomplete, Answers.com Questions convex mirrors only form virtual images 1 Google Autocomplete convex mirrors always form virtual images 1 Google Autocomplete a convex mirror always forms virtual image 1 Google Autocomplete