perimeter rectilinear shapes

Finding Perimeter of Rectilinear Shapes

In this lesson, you will be able to identify the different types of angles such as acute angles, obtuse angles and right angles.

Target Age:

Lesson Overview

By the end of this unit, children will be able to:

  1. Understand the concept of perimeter as the total distance around a shape.
  2. Calculate the perimeter of shapes on a grid by counting the lengths of their sides.
  3. Apply the concept of finding perimeter on a grid to solve real-life and mathematical problems.

Curriculum Alignment: Year 4 Measurement:

  • Measure and calculate the perimeter of a rectilinear figure (including squares) in centimetres and metres.
Last updated on: February 26, 2026

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