Answer:
120 cm squared
Step-by-step explanation:

Answer:
36.7 degrees. A straight line is 180 degrees.
Step-by-step explanation:
Step-by-step explanation:
I don't know the answer to that.
Answer:
20 square units
Step-by-step explanation:
If Polygon C has an area of 40 square units, and we are told that Polygon D is a copy of Polygon C but with a scale factor of 1/2, then everything for Polygon D would just be one-half of what it was for Polygon C. Thus, the area would be half of 40 square units, or, 20 square units.