Understanding acute, obtuse, right, and straight angles is really important in geometry! Let's break it down:

1. Types of Angles:

   • An acute angle is smaller than 90 degrees. It makes triangles sharp and pointy!
   • A right angle is exactly 90 degrees. It creates that perfect corner you see in squares and rectangles.
   • An obtuse angle is bigger than 90 degrees. It gives us wide-open spaces.
   • A straight angle is exactly 180 degrees. It looks like a straight line!

2. How Angles Work Together:

   • Complementary Angles: These are two angles that add up to 90 degrees.
   • Supplementary Angles: These two angles sum up to 180 degrees.

Understanding these angles is the start of learning more cool stuff in geometry! Isn’t that exciting? 🎉