Question

please give me answer urgent plz​

Answer 1

Answer:

120°

Step-by-step explanation:

Since the three angles are in the ratio 3:3:1, therefore they can be expressed as 3x°, 3x° and x°.

We know,

Sum of all angles of a quadrilateral = 360°

=> 3x + 3x + x 80 = 360

=> 3x + 3x + x 80 = 360=> 7x = 360 - 80

=> 3x + 3x + x 80 = 360=> 7x = 360 - 80=> x = 280/7

=> 3x + 3x + x 80 = 360=> 7x = 360 - 80=> x = 280/7=> x = 40

THEREFORE, The the equal angles are 3x = 3 x 40 = 120° each.

Hope it helps. please mark as brainliest.

Answer 2

Answer:

sum of angles in a quadrilateral will be 360degree,

fourth angle is given which is 80degree.

angle remaining=360-80=280degree.

the remaining three angles arein ratio 3:3:1

we'll divide 280degree in 3:3:1 ratio

let remaining angles be 3×3× and x respectively

3×+3× +x=280degree.

therefore,x=280/7 =40 degree

hence, the measure of equal angles be 3x

=3*40=120degree

angles will be 120,120,40,80)degree,the sum of which

is 360degree. hope this could help