Answer:
Angle Addition Postulate
Step-by-step explanation:
Given:
Prove:
Proof:
1. 
- Angle Addition Postulate
2. 
- given
3. 
- given
4. 
- Substitution Property of Equality
5. - Simplify
Answer:
The answer is C, D, and E
Step-by-step explanation:
Answer:
<CAB and <DAE are vertical angles
<EAB and <CAD are vertical angles
Step-by-step explanation:
this is because they are formed by the prolongation of the sides of the other angles and are opposite to them on the other side of the vertex.
You have to get rid of 1/2 by multiplying it by its recriprocal which is like this:
1) 1/2 x 2/1 which equals to zero and you do the same to the other side.
2) -12 x 2/1 = -24x then multiply-24x with 7 which equals -168.
16-x= -24x -168
3) subtract 16 to the other side and subtract 24x with x
23x= -184
4) divide by 23 to isolate x and you get -8
5) x=-8
