please give me answer urgent plz
Attachments:
Answers
Answered by
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.
Answered by
1
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
Similar questions