Question

given \\(\delta abc \cong \delta def\\), choose the following true statement. select all that apply.

\\(\angle a \cong \angle e\\)
\\(\angle c \cong \angle f\\)
\\(bc \cong ef\\)
\\(ca \cong fd\\)

Explanation:

Analyze the congruence statement

The given congruence statement is \(\Delta ABC \cong \Delta DEF\). This statement establishes a precise one-to-one correspondence between the vertices of the two triangles:

• Vertex \(A\) corresponds to vertex \(D\).
• Vertex \(B\) corresponds to vertex \(E\).
• Vertex \(C\) corresponds to vertex \(F\).

Evaluate corresponding angles

Using the vertex correspondence, we determine the corresponding angles:

• \(\angle A \cong \angle D\) (Thus, \(\angle A \cong \angle E\) is false).
• \(\angle B \cong \angle E\).
• \(\angle C \cong \angle F\) (Thus, \(\angle C \cong \angle F\) is true).

Evaluate corresponding sides

Using the vertex correspondence, we determine the corresponding sides:

• Side \(AB\) corresponds to side \(DE\), so \(AB \cong DE\).
• Side \(BC\) corresponds to side \(EF\), so \(BC \cong EF\) (Thus, \(BC \cong EF\) is true).
• Side \(CA\) corresponds to side \(FD\), so \(CA \cong FD\) (Thus, \(CA \cong FD\) is true).

Answer:

• \(\angle A \cong \angle E\)
• \(\angle C \cong \angle F\) (Correct answer)
• \(BC \cong EF\) (Correct answer)
• \(CA \cong FD\) (Correct answer)