Perimeter and area of plane figures
Exercises and articles on perimeter and area of squares, rectangles, triangles and composite plane figures.
Available exercises
Perimeter and area of composite figures
Exercises on computing the perimeter and area of figures formed by joining or subtracting squares, rectangles, and triangles.
Perimeter and area – mixed problems
Exercises that randomly alternate between perimeter and area for various plane figures.
Area of square and rectangle
Exercises on computing the area of a square or rectangle. The result is in square units (cm², m², mm²).
Perimeter of square and rectangle
Exercises on computing the perimeter of a square or rectangle. The shape is randomly chosen each time.
Area of triangle
Exercises on computing the area of a triangle using a side and its corresponding altitude. The result is in square units.
Perimeter of triangle
Exercises on computing the perimeter of a triangle for all three basic types: equilateral, isosceles, and scalene.