In isosceles triangle ARST, RS is congruent to ST and the measure of one base angle ZR is 67.5°. What is the
measure of vertex angle ZS?
O 13.5 degrees
O 45 degrees
O 67.5 degrees
O 85 degrees
O 135 degrees

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.