Quick answer
A quadrilateral is a polygon with four sides, four vertices and four interior angles.
- Main formula
- Use the figure properties first, then choose the perimeter, area or volume formula.
- Quick example
- For a rectangle, area is base x height.
What this lesson covers
A quadrilateral is a polygon with four sides, four vertices and four interior angles.
- Main vocabulary and visual recognition.
- Important formulas and when to use them.
- Examples that connect the figure with measurements.
Recommended order
Start with the definition, identify the parts of the figure, then apply the formula using consistent units.