In the figure, arms BA and BC of ∠ABC are respectively parallel to a

1.	In the figure, arms BA and BC of ∠ABC are respectively parallel to arms ED and EF of ∠ DEF. Prove that ∠ABC=∠DEF.
Answer» In the figure, arms BA and BC of $∠ A B C$ are respectively parallel to arms ED and EF of $∠$ DEF. Prove that $∠ A B C = ∠ D E F$ .

In the figure, arms BA and BC of ∠ABC are respectively parallel to arms ED and EF of ∠ DEF. Prove that ∠ABC=∠DEF.

Answer»

In the figure, arms BA and BC of $∠ A B C$ are respectively parallel to arms ED and EF of $∠$ DEF. Prove that $∠ A B C = ∠ D E F$ .