4.The angles of a quadrilateral are in the ratio 2:4:5:7, find its smallest angle
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Answer:
40°
Step-by-step explanation:
total angle = 360°
the angles can be written as 2x, 4x, 5x, 7x
sum of these angles equals 360
2x + 4x + 5x + 7x = 360°
18x = 360°
x = 20°
the smallest angle = 2x = 40°
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