1) Consider the following: A D A B Let 8 denote the defect of a triangle. One of the following two statements can be proved in Neutral Geometry and the other cannot. Prove the one that can be proved and explain why the other cannot be proved in Neutral Geometry: S: 8(ACD) < 8(ABC) T: 8(ACD) ≤ 8(ABC)

1) Consider the following: A C D B Let 8 denote the defect of a triangle. One of the following two statements can be proved in Neutral Geometry and the other cannot. Prove the one that can be proved and explain why the other cannot be proved in Neutral Geometry: S: 8(ACD) < 8(ABC) T: 8(ACD) ≤ 8(ABC)

I am really confused how to answer 2 and 3 been working on for a while now but I am completely lost

3. In the accompanying diagram, BDE, AB || CD, and DC bisects LADE. Triangle ABD must be (1) scalene (2) isosceles (3) equiangular (4) right D. AB