1.

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Answer»

As we know that sum of all the angles in a triangle is equal to 180 degree
Therefore, (x-40°) +(x-20°)+(½x-10°) = 180°
2x+½x-70 =180°
2½x= 180°+70°
5/2x=250°
=> x=100
Hence, the VALUE of x is 100
Then, the value of FIRST angle of the triangle will be (x-40)= (100-40)=60°
the value of SECOND angle will be (x-20)= (100-20)=80°
Similarly, the value of third angle will be (½x-10)=(50-10)=40°

The angles of triangle MEASURES 60°,80°and 40°

HOPE IT HELP YOU !!!


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