Answer:
x = 78°
Step-by-step explanation:
we know that sum of all exterior angles of a quadrilateral is 360°
given angles are – x, x+20°, x-10° & 2x-40°
sum of these angles = 360°
so,
x+x+20+x-10+2x-40 = 360°
5x-50+20 = 360
5x-30 = 360
5x = 360+30
x = 390/5
x = 78
therefore the value of x = 78°
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Hope its helpful ARMY♥
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Verified answer
Answer:
x = 78°
Step-by-step explanation:
we know that sum of all exterior angles of a quadrilateral is 360°
given angles are – x, x+20°, x-10° & 2x-40°
sum of these angles = 360°
so,
x+x+20+x-10+2x-40 = 360°
5x-50+20 = 360
5x-30 = 360
5x = 360+30
x = 390/5
x = 78
therefore the value of x = 78°
plz mark me as brainlist :)
Given Angles : x +20° , x -10° , 2x-40° , x
Sum of Angles = 360°
Therefore :
x + 20°+x-10°+2x-40°+x = 360°
5x- 50° + 20° = 360°
5x-30°= 360°
5x = 360 + 30°
5x= 330°
x= 330°/ 5
x= 78 ° //
As proven above the value of x=78°
Hope its helpful ARMY♥