three angle of a quadrilateral are in the ratio 4:5:3. The fourth angle is 120°. Find the three angles of the quadrilateral
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10
Answer:
hope this helps u
Step-by-step explanation:
sum of all angles in a quadrilateral = 360
4x+5x+3x+120=360
12x+120=360
12x=360-120
12x=240
x=240/12
x=20
4x=4*20=80
5x=5*20=100
3x=3*20=60
verification
sum of all angles in a quadrilateral = 360
4x+5x+3x+120=360
80+100+60+120=360
360=360
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Answer:
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