Question

in given figure angle ABC is 65 Angle BCE is 30 DCE is 35......

Answer 1

hi

first prove that EF parallel CD by co-interior angle property as 35+145= 180°
then prove AB is parallel to CD (30+35) by alternate interior angle property

so ultimately AB is parallel to EF.

hope it will help
thanks...

Answer 2

because angle b or c equal