154k views
5 votes
Options are:

80
45
90
100

Options are: 80 45 90 100-example-1
User JockX
by
7.0k points

1 Answer

4 votes

=>x+45+45=180°

=>x+90=180°

=>x=180°-90°

=>x=90°

User Sinead
by
7.5k points