Question 5 (ii) In the given figure, the arms of two angles are parallel. If ΔABC=70∘, then find: ∠DEF
Given, BC|| EF and DE is a transversal line and ∠ABC=70∘∠DEF=∠DGC [Corresponding angles]∴∠DEF=70∘
In the figure, arms BA and BC of ∠ABC are respectively parallel to arms ED and EF of ∠ DEF. Prove that ∠ABC=∠DEF.