Question

The angle of a quadrilateral are in the ratio 1:2:4:5 then the smallest of these angle is
A) 20°
B) 30°
C) 60°
D) 80°​

Answer 1

Answer:

C) 30°

Step-by-step explanation:

Suppose sides are related to x

Therefore 1x + 2x + 4x + 5x = 360° (Angle sum property)

3x + 9x = 360°

12x = 360°

x = 30°

Smallest angle is 1x Therefore 1(30) = 30°

Answer 2

Answer:

C) 30 degree

Step-by-step explanation:

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