Question

Please help - Multiple Choice!

Answer 1

19) x=21

20) x=22

21) m∠1=70°

Explanation:

19)

`5x+75=180`

`5x=105`

`x=21`

20)

`90+68+x=180`

`x+158=180`

`x=22`

21)

Because ∠1 and ∠3 are vertical, they are also congruent.

m∠3=m∠1=70°