Question

the measures of three angles of a quadrilateral are 39°, 141° and 13° find the fourth angle​

Answer 1

Answer:

Answer: 167

Step-by-step explanation:

Firstly, add the three sides of the quadrilateral that is 39°, 141° and 13° and subtract it from 360°.

39° + 141° + 13°+ x = 360

193° + x = 360

x = 193°- 360°

x = 167°

Answer 2

Answer:

Let ABCD be the quadrilateral.

mLA=39° , mLB=141°, mLC=13° , mLD=?

mLA + mLB + mLC + mLD = 360°….........……measure of all angles of a quadrilateral is 360°

39° + 141° + 13° + mLD = 360°

193° + mLD = 360°

mLD = 360 - 193

mLD = 167°