Answer the following:
If ∆STU≅∆XYZ, then angle S= ?
Given ∆STU≅∆XYZ
∠S=∠X [By corresponding parts of congruent triangles]
Hence, ∠S=∠X
If ∆ABC≅∆DEF, then AC= ?
If ∠XYZ = 40∘, then, ∠XYZ is a/an ___ angle.