1.
equailateral
all angles are equal
3x=180
x=60
see x+y=180 since straight line
so
60+y=180
y=120
x=60
y=120
3.
2 angles are 35 and congruent
35+35+3x+20=180
90+3x=180
minus 90
3x=90
divide 3
x=30
4.
ok so
180=50+?+?
minus 50
130=2?
divide 2
65=?
now we have that is a straight line so
180=65+?
115=?
now
115+?+?=180
2?=65
divide both sides by 2
?=32.5
