Answer true/false. if false, give a counterexample.
11. perfect squares are closed under multiplication.

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Which statement is true? n is a point of tangency on circle p. pt is a secant of circle p. is a secant of circle p. vu is a tangent of circle p.

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?