Question

Three angles of a quadrilateral are 80° , 100° , 60° . Find the fourth angle.
Please answer step by step

Answer 1

Answer:

GIVEN :

Three angles of Quardilateral are 80⁰,100⁰,60⁰

TO FIND :

Fourth angle

SOLUTION :

We are aware of,

Sum of all angles in a Quadrilateral is 360⁰

Let the fourth angle be x

$\large \tt \: 360 = 80 + 100 + 160 + x$

$\large \tt \: 360 = 180 + 160 + x$

$\large \tt \: 360 = 340 + x$

$\large \tt \: 360 - 340 = x$

$\large \tt \: 20 = x$

Answer 2

Answer:

120°

Step-by-step explanation:

Sum of all the angles of a quadrilateral is 360.

Let other angle be x ,

Then x+100°+60°+80°=360°

x+240°=360°

x=(360–240)°

x=120°

Fourth angle =120°