Answer:
Step-by-step explanation:
1. We know that the sum of angles in a triangle is 180, so, we know that two of the angles are 90 and 57, so let's add those together: 90+57=147. Now let's subtract 147 from 180. 180-147=33, so the missing angle is 33.
2. I don't know this one... maybe a equalaterial triangle?
3. 44.9 degrees, because the sum of the angles would equal 180.
4. No, it is unable to create a triangle.
5. A unique triangle
