Answer:
180 -angle BCD
Step-by-step explanation:
if you've found angle BCD you should be able to find angle DCE as angles on a straight line equal 180°
Answer:

Step-by-step explanation:
The perimeter of a polygon is simply sum of the lengths of all sides of the polygon.
Therefore, we can find this polygon's perimeter by adding up the length of each of its sides:

Since there is a lot to keep track of, I'd recommend picking any side and moving clockwise/counter-clockwise until you get all sides.
Answer:
A,B,C,E,F
Step-by-step explanation:
The only one that it is not is irrational. I think this is correct and I hope it helps
Answer:
D is the answer
Step-by-step explanation:
0,0 is the only one that both start at 0, which is crucial for the origin (or really just to make sure they have the exact same number :) )