Question

The four angles of a quadrilateral are (2x – 20)', (x + 30°, (x + 50° and 2x0. Find all
the four angles.

Answer 1

Step-by-step explanation:

Given angle of pentagon are x,x+20,x+40,x+60 and x+80

We know that sum of angle of pentagon =540

0

Then x+x+20+x+40+x+60+x+80=540

⇒5x+200=540

⇒5x=540−200

⇒x=

5

340

=68

o

Then smallest angle of pentagon is 68

o