Question

the angle of a quardrilateral are x°, (x-10°), (x-30°)and (2x) the smallest angle is equal to
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Answer 1

Answer:

$x + x - 10 + x - 30 + 2x = 360 \\ 5x - 40 = 360 \\ 5x = 360 + 40 \\ x = \frac{400 }{5} \\ x = 80 \\ the \: smallest \: angle \: is \: = x - 30 \\ = 80 - 30 \\ = 50$

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Answer 2

Answer:

70°

Step-by-step explanation:

Angles of quadrilateral=x°,(x-10°),(x-30°),(2x)

So, x+(x-10)+(x-30)+2x=360°{Angle sum property

5x-40=360° of a quadrilateral}

5x=360+40

5x=400

x=400/5

x=80°

So, smallest angle=x-30°=80°-30°=50°