In parallelogram CDEF if m angle EFC=160^ find m angle FCD

15 point ! ~ see if you know the answer to both you!

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?

Which number line correctly shows 0.8 + 0.3?