The number of fish in a lake decreased by 20% between last year and this year. Last year there were 75 fish in the lake. What is the population this year?

Does the construction demonstrate how to copy an angle correctly using technology a) yes the distance between points a and f was used to create circle h b) yes the distance between points f and g was used to create circle h c) no the distance between points a and f was used to create circle h d) no the distance between points f and g was used to create circle h