. Angles of a triangle are xº, (x + 10º and (x + 20°. Find the degree measures of the angles of the triangle.
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Answer:
Measure of 1
st
angle =x
o
Measure of 2
o
angle =(x−20)
o
Measure of 3
rd
angle =(x−40)
o
By using angle sum property of triangle
x
o
+(x−20)
o
+(x−40)
o
=180
o
3x−60=180
3x=240
x80
o
∴ Measure of 1
st
angle =x
o
=80
o
Measure of 2
nd
angle =(x−20)
o
=60
o
Measure of 3
rd
angle =(x−40)
o
=40
o
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