Name each polygon. Then tell whether it is a regular polygon or not a regular polygon.

1. quadrilateral; not regular

2. quadrilateral; regular

3. octagon; not regular

4. hexagon; regular

5. triangle; regular

6. pentagon; not regular

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^