Question

The angles of a quadrilateral are x, (x – 10)°, (x + 30)° and 2x. Find the angles.​

Answer 1

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Answer:

$x=68$

Step-by-step explanation:

$x+(x-10)+(x+30)+2x=360\\5x+20=360\\5x=340\\x=68$

Answer 2

Sum of angles of a quadrilateral = 360

x + x - 10 + x + 30 + 2x = 360

5x + 20 = 360

5x = 360 - 20

5x = 340

x = 340 / 5

x = 68°

The angles are 68°, 58°, 98°, 136°