the angle of a triangle are X + 40 degree X + 20 degree and 1 by 2 x so so find the value of x
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Answer:
x=30.
Step-by-step explanation:
sum of all angles of triangle is 180º
hence, (x+40)+(x+20)+2x=180º
4x+60=180º
4x=180-60=120º
x=120/4=30.
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Answer:
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