Xiao Min's reasoning is incorrect. Omit correct reasoning.
Question 2: The condition is or. Prove it briefly.
Question 3: To judge whether two triangles are co
Xiao Min's reasoning is incorrect. Omit correct reasoning.
Question 2: The condition is or. Prove it briefly.
Question 3: To judge whether two triangles are congruent, the essential factor is edges, and at least one pair of edges must be equal.
leave out