A triangle has interior angles 2x,3x and 4x. Find largest exterior angle.Show your working
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Answer:
The angles of a triangle are 2x, 3x and 4x degrees. How do you find the value of x?
When we add, 3 angles than it is supplementary.
Sum of the measure of angles are supplementary, this is the property used in the sum.
So,2x+3x+4x=180.
9x=180.
X=180/9.
X=20.
So,the answer of the question is, the value of x =20 degree.
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Step-by-step explanation:
let the angle be 2x 3x and 4x
a/q
sum of all angles of a triangle is 180
2x+3x+4x = 180
9x = 180
x=20
1st angle is 40
2and angle 60
3rd angle 80
largest angle 80
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