Question

in fig 6.118 find the value of x ​

Answer 1

Here is your answer....

Answer 2

Answer:

In the triangle ABC,

we known that sum of all a triangle be 180

ACB+BAC+ABC =180

30+40+ABC=180

ABC=180-70

ABC=110

NOW,

BY linear pair

ABC+DBE=180

110+DBE=180

DBE=180-110

DBE=70

In triangle DBE,

We known that..

DBE+BDE+DEB=180

70+45+DEB=180

DEB=180-115

DEB=65

By linear pair

DEC+DEB=180

DEC+65=180

DEC=180-65

DEC=115

x =115 answer