Will give brainlest 20 points

Step-by-step explanation:

1. false

2. true

3. true

Step-by-step explanation:

1. Since a and b are right angles, a+b = 180, not 90, false

2. since a right angle is 90 degrees and b is a right angle, 90 + 90 = 180 true

3. B and A are right angles, so 180 - 90 = 90 true

i: -1.3

ii: 1.3

Step-by-step explanation:

You literally have it.

I hope this helps!

pls ❤ and give brainliest pls