What is the sum of the angles in a quadrilateral?

The sum of the angles in a quadrilateral is indeed 360 degrees. This property is based on the fact that a quadrilateral can be divided into two triangles. Since the sum of the angles in a triangle is always 180 degrees, when you combine the angles from two triangles, you get 180 degrees + 180 degrees, which equals 360 degrees.

This fundamental concept in geometry applies to all types of quadrilaterals, whether they are squares, rectangles, trapezoids, or irregular four-sided figures. Thus, it is essential to remember that any quadrilateral will always have a total interior angle sum of 360 degrees, providing a crucial aspect for solving various problems involving angles in geometry.