Given:
A pentagon with one of the angle measuring 120°
To find:
The measure of rest of the angles (2x,3x,4x&5x)
Solution:
We know that the measure of sum of all the angles in a pentagon = 540°
.°.
- 120°+2x+3x+4x+5x = 540°
- 120°+14x= 540°
- 120°-120°+14x = 540°-120°
- 14x = 420°
- x = 420°/14
- x=30
.°.
2x
3x
4x
5x
Hope it helps
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