Q1 of 70 Page 120

According to the definition of similarity of triangles, which are the conditions for correspondence DEF ↔ ZXY between ΔDEF and ΔXYZ to be a similarity?

Given, ∆DEF ↔ ∆ZXY,


There are mainly two conditions for correspondence DEF ZXY between DEF and XYZ to be a similarity.


⟹The corresponding angles are congruent.


i.e. m∠D = m∠X ∠D ≅ ∠X


m∠E = m∠Y ∠E ≅ ∠Y


m∠F = m∠Z ∠F ≅ ∠Z


⟹The lengths of the corresponding sides are in proportion.


i.e.


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