TRIANGLES AND POLYGONS ( PART 1)
Triangles are three-sided polygons with three angles, and their properties depend on their sides and angles. Types include equilateral (all sides and angles equal), isosceles (two sides and angles equal), and scalene (all sides and angles unequal). Polygons are multi-sided shapes with straight sides, such as quadrilaterals (4 sides), pentagons (5 sides), and hexagons (6 sides). Regular polygons have equal sides and angles, while irregular polygons do not. The sum of interior angles in a polygon is calculated using (n-2) × 180°, where n is the number of sides. Let me know if you need more details!