Chapter 1 - Tools of Geometry - 1-8 Perimeter, Circumference, and Area - Practice and Problem-Solving Exercises - Page 67: 69

a) $1^2=1,\ 2^2=4,\ 3^2=9,\ 4^2=16,\ 5^2=25,\ 6^2=36,\ 7^2=49,\ 8^2=64,\ 9^2=81,\ 10^2=100$ b) It is odd

a) A perfect square has a whole number as its root, so squaring the first 10 whole numbers gives the first 10 perfect squares. b) Look at some examples to answer. $3^2=9$ and $5^2=25$. Both are odd.