Question

The angles of a quadrilateral are x°, (x – 10)°, 2x°, (x + 25)°. Find x. (HINT: Add all the angles and equate it to 360°).

Answer 1

Given,

angles if quadrilateral are x, x-10,2x,x+25

Sum of angles of quadrilateral is 360 degrees

x+x-10+2x+x+25=360

5x+15=360

5x=360-15

5x=345

x=345/5

x=69

therefore the value if x is 69

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