Answer:
No. 1: y = 90 (vertically opposite angles)
Also, x = 9. To find x, we'll have:
[tex]3x + 7 + 56 + 90 = 180 \\ (sum \: of \: angles \: on \: a \: straight \: line) \\ 3x + 153 = 180 \\ 3x = 180 - 153 \\ 3x = 27 \\ \frac{3x}{3} = \frac{27}{3} \\ x = 9.[/tex]
No. 4: y = 62 (vertically opposite angles)
Also, x = 12. To find x, we have:
[tex]5x = 60 \\ \frac{5x}{5} = \frac{60}{5} \\ x = 12.[/tex]
