How do you write 77/20 in a decimal

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Opposite angles in a parrellelogram are