2x⁰+x⁰+n⁰=180⁰
180⁰-144⁰=36⁰ unghiul "n"
n=36⁰
3x⁰+36⁰=180⁰
3x⁰=144⁰
x⁰=48⁰
2x⁰=96⁰
n⁰=36⁰
96⁰+48⁰+36⁰=180⁰ adevarat
