9. Lines A and B are parallel lines. Find the measures of angles 1, 2 and 3.

1= 33

2= 90

3= 57

Step-by-step explanation:

the agle thats 57° is alternate interior to ∠3 so ∠3= 57

so 33+ 57= 90 ⇒ 180- 90= 90 ⇒ ∠2= 90

57+ 90= 147⇒ 180- 147= 33

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step-by-step explanation:

6 equilateral triangles