To classify polygons, we look at both their angles and side lengths. Here’s how we can break it down:

1. Triangle Types:

   • Acute Triangle: All angles are less than 90 degrees.
   • Right Triangle: One angle is exactly 90 degrees.
   • Obtuse Triangle: One angle is greater than 90 degrees.

2. Quadrilateral Types:

   • Rectangle: It has four right angles (90 degrees).
   • Rhombus: The angles across from each other are the same, and all the angles add up to 360 degrees.
   • Trapezoid: At least one pair of sides is parallel, and the four angles combined equal 360 degrees.

By knowing the angle measures, we can easily figure out what type of polygon we have and what makes it special!