### Home > INT2 > Chapter 9 > Lesson 9.4.1 > Problem9-144

9-144.

What is another (more descriptive) name for each polygon described below?

1. A regular polygon with an exterior angle measuring $120°$.

$n=\frac{360°}{120°}$

2. A quadrilateral with four equal angles.

A rectangle.

3. A polygon with an interior angle sum of $1260°$.

$(n - 2)(180) = 1260°$

4. A quadrilateral with perpendicular diagonals that bisect each other.

A rhombus.