What Are Quadrilaterals?
Every quadrilateral is simply a shape with four sides, but they all share some important features. You'll find that all quadrilaterals have exactly 4 sides and their internal angles always add up to 360°.
Most quadrilaterals contain parallel lines - these are lines that never meet, like railway tracks. Squares and rectangles are special types of quadrilaterals because they have 4 right angles (90° each).
Quick Check: Look around your classroom right now - can you spot at least three quadrilaterals? Your desk, the whiteboard, and even the windows are probably quadrilaterals!
These shapes aren't just for maths lessons - architects, designers, and engineers use quadrilaterals to create everything from buildings to video games.
