Question

The three angles of a quadrilateral are 76°, 54° and 108°. Find the measure of the fourth angle.​

Answer 1

Answer:

LET,  THE FOURTH ANGLE=X

   THEN,As we know that

the sum of all algle in quadrilateral=360

FIND   X=?

  Then     A/Q

           76+54+108+x=360

            238+x=360

                  x=122

Answer 2

$\huge \underline \bold \green{answer}$

$mark \: as \: brainlies \: also \: follow \: me$

$360 = 76 + + 54 + 108 + x$

$360 = 238 + x$

$x = 360 - 238$

$x = 122$

$\huge \underline \red{ note}$

$\: interior \: angle \: of \: quadrilateral \\ is \: \: 360$

$\huge \bold{proof}$

$(n - 2)180$

$(4 - 2)180$

$2(180)$

$= 360$

$\huge \: proved$