Question
Write the complement of the following angles:
30°
30°
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Number of triangle: 1

Number of triangles: 4

Number of triangles: 9
∆ABC and ∆DEF are similar in the correspondence ABC ↔ DEF.
∠A ≅ ∠D, ∠B ≅ ∠E, ∠C ≅ ∠F
and $\frac{ AB }{ DE }=\frac{4}{8}=\frac{1}{2} ; \frac{ BC }{ EF }=\frac{3}{6}=\frac{1}{2} ; \frac{ AC }{ DF }=\frac{2}{4}=\frac{1}{2} \ldots$ the corresponding sides are inproportion.
Similarly, consider ∆DEF and ∆PQR. Are their angles congruent and sides proportional in the correspondence DEF ↔ PQR?
