Advanced Angles and Square Properties
This section continues with more complex angles and introduces the properties of a square, which is fundamental in Figury geometryczne na płaszczyźnie.
Additional angle types are presented:
- Reflex angle (Kąt wklęsły): Measures between 180° and 360°
- Full angle (Kąt pełny): Exactly 360°
- Adjacent angles (Kąty przyległe): Two angles that share a common side and vertex
The properties of a square are then detailed:
- Sum of interior angles: 360°
- Area formula: A² = A * A, where A is the side length
- Diagonal length: D = A√2
- Perimeter formula: 4A
Vocabulary: Adjacent angles are two angles that share a common vertex and one common side, but do not overlap.
Example: In a square with a side length of 5 units, the area would be 25 square units , and the perimeter would be 20 units .




