A lesson on perimeter and area of 2D shapes. It defines perimeter and finds it for rectangles, squares and triangles, then gives the area formulas for parallelograms, triangles and trapeziums, showing how the trapezium formula comes from two triangles.
What this presentation covers
- what perimeter is
- perimeter of rectangles, squares and triangles
- what area is
- area of a parallelogram
- area of a triangle
- area of a trapezium
Level: KS3
Slides: 8
Format: PowerPoint (.pptx)
Contributed by: Rudolph Massie