the three angles of a triangle are x.(x+20°)and(x+40°).find the value of x
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Step-by-step explanation:The sum of measures of angles of a triangles is 180 degrees
∴(x−40)+(x−20)+(x/2−10)=180
o
∴5x/2−70
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=180
o
∴5x/2=250
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∴5x=500
o
∴x=100
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