When you begin to learn about angles in triangles and quadrilaterals, it’s like discovering a secret code! Each shape has its own rules about angles, and knowing these can help you understand what they are all about.

Triangles

1. Types of Angles:

   • Acute Angles: Less than 90 degrees.
   • Right Angles: Exactly 90 degrees.
   • Obtuse Angles: More than 90 degrees but less than 180 degrees.

2. Angle Sum:

   • In any triangle, the total of the angles is always 180 degrees.
   • If you know two of the angles, you can find the third by taking away their sum from 180 degrees.

3. Special Triangles:

   • In an equilateral triangle, all angles are 60 degrees and all the sides are the same length.
   • In an isosceles triangle, two angles are equal, which can help you solve angle problems.

Quadrilaterals

1. Angle Sum:

   • In any four-sided shape (like rectangles, squares, and trapezoids), the total of the angles is 360 degrees.

2. Identifying Angles:

   • In rectangles or squares, all angles are 90 degrees (right angles).
   • A trapezoid can have different types of angles, so knowing which angles are acute or obtuse can help you understand its shape better.

In simple terms, learning about angles not only helps you solve problems but also makes it easier to picture and understand how different shapes connect with each other!