Question

The three angles of a quadrilateral are 60 degrees , 80 degrees and 120 degrees . Find the fourth angle

Answer 1

Hey friend here is your answer

The angles sum is 360.

Three angles are 60 , 80 and 120

Therefore,

60 + 80 + 120 + x = 360

140 + 120 + x = 360

260 + x = 360

x = 360 - 260

x = 100

Therefore , fourth angle is 100 degree.

Hope it helps you.

Answer 2

$\huge \mathfrak{hello \: mate}$

$\huge\bold\pink{here \: is \: u \: r \: answer \: dear.....}$

$\bold \purple{in \: order \: to \: solve \: your \: problem } \\ \bold \purple {we \: can \: use \: this \: formula......}$

$\bold \green{the \: sum \: of \: all \: the \: angles \: of \: a \: quardilateral \: is \: 360}$

_____________________So.......

$60 + 80 + 120 + x = 360$

$260 + x = 360$

$x = 360 - 260$

$x = 100$

$\mathbb{hence \: the \: fourth \: angle \: is \: 100 \: degreed}$

$<marquee> have a nyc day$

By...

$\huge \bold \blue{ sitara}$